I don't think anyone makes a kit, I made mine from scratch. Most other T-6 Bubba's have also. It's fairly easy to do, especially if the left side panel and cowlings are already off.
You'll need a smoke oil tank. I used two old freon tanks and welded fittings to them, but I have also seen plastic boat gas tanks used.
You'll also need a high volume pump of the proper voltage. I had used an old fuel pump from a Piper Navajo, 45GPH, 25PSI, because I had a "G" model and it was 24 volt system.
I made an oil nozzle using a stainless steel AN fitting and inserted in one of the threaded holes in the exhaust collector where the original exhaust analyzer went.
Finish this off with the appropriate hoses and electrical connnectors/switch and you are good to go.