drag tyres

Looking for a pair of rear tyres to suit my 60s Gasser. Ideally something like: 295/60-15 or anything else that will squeeze on a 8"x15" steel rim. Will consider period style cross-plys such as 8.00 or 8.20 x 15 or DOT drag tyres upto 29/12.50-15 (about the max I can go) Anyone got any cheater...