The best thing I can recommend is get known around Concord/Statesville NC. Take a charter job there if you have to and hang around the airports. Get known by the pilots and let them know you are looking.
There are a few things you should know first though. Most of the NASCAR pilots are retired or furloughed airline pilots. The only GA job they have ever held is for the NASCAR people. They didn't have anyone to teach them what is required for a GA flight department. If there is fuel, beer and ice on board, and you can look at the airplane from across the ramp and it looks like all the big pieces are on, they're ready to go. A takeoff at 10 to 20% over gross weight is not unusual. In fact, it is the norm. It is normal to load a B200 with a pilot, 11 pitcrew guys, 3 or 400 pounds of bags and boxes of spare parts, then takeoff with full fuel so you don't have to buy fuel on the road. (Roughly 2500 pounds over gross.) Stuff like this happens so often that the pilots who fly the NASCAR people become know as "one of those NASCAR pilots." Once you get that title, few people in the area will hire you, other than another NASCAR bunch. That means low pay and low or no benefits are the norm. Also, you better like sharing your motel room with your co-pilot.
Mondays are usually slow. Tuesdays sometimes you fly to a test or take a driver to an appearance. Wednesday is just like Tuesday. Thursday you will take the aforementioned over-load to the track. Friday you either stay all day or you may run back to Charlotte to get parts. Same for Saturday, except you will end the day in Charlotte, or where ever you are based. Sunday morning, about 05:00 you will depart with the aforementioned over-load again. Sunday afternoon you will wait in line for hours to takeoff with the same bunch that you brought in earlier in the morning. Depending on the airline and race schedule, you may go back to the track to pick up another load to go home with. Either way, you're guaranteed a 16 to 18 hour day. To give you an idea about how the departures are after a race, the last time I left Hampton GA, (The airport at the track in Atlanta.) I was in a Lear 25. From the time I started keeping track of how long I waited, until I tookoff was 1 hour and 47 minutes. I started one engine and got in line, then I saw that the line I was in wasn't moving so I shut back down. I didn't restart until the line was moving and I didn't start the second engine until I was number 3. By the time I got to be number 1 for departure I had burned almost 120 gallons of fuel. That wasn't the worst experience either.
If you fly for one of the drivers instead of a team, the schedule is a little different. Normally there is a team meating on Monday so you don't fly. Tuesday is tests and appearances, same for Wednesday. Thursday you go the the track. Sometimes there are other races or appearances on Friday and Saturday, so you fly then. Sunday there is leaving the track to deal with. Plus, you get to share the room again. All in all, flying for a driver is better.....sometimes. Some of them want you to feed the horses, bail the hay, change the oil in the boat, work in the Busch shop, etc... when you aren't flying. If you say you worked all last week, they say, you didn't fly on Monday, and on Friday and Saturday all you did was sit in the motel room or hang out at the track. What do you mean you want some time off?!? These guys are just rednecks with money. That makes them arrogant, obnoxus, and a general pain in the a$$. (And it's getting late, I can't spell any more.)
Having said all that, I will say that there are exceptions to the rules. There are some good pilots, good owners, and good drivers. There are a couple of drivers who I flew for that I would fly for again in a heartbeat. I had a corporate job in Hickory for a while. When the NASCAR guys were starting to buy Lears, I trained some of their pilots. And I flew along with them until they got enough time to get insurance. When I started, I thought it would be a GREAT job. It didn't take long to realize I didn't want anything to do with it.....with a couple of exceptions.
I know you still want to do it. I did too. I heard all this and did it anyway. I just didn't want you to go into it blind. Good luck.
I just thought of one thing you might find funny. There is a Lear 25 that I have flown with 4 different N numbers, under 3 different owners, all over the space of a year.