Quote Originally Posted by Jac Mac View Post
Mazda 1500 DOHC pistons & Isuzu Piazza Rods are just a couple of more modern alternatives for playing with these motors to stretch the capacity....that is if your class/association will not get their noses out of joint when you think outside the square. With the benefit of hindsight & progress a girdle would be more help for the main caps these days..
SVRA are good with engine regs recognising the difficulty of locating period parts. The internals are free so no problems using any of the bits you mentioned. They are more concerned about guys telling porkies about their engine capacity.