Ok I have a 86 trx.short rod motor 67.50mm cool head 20cc dome hotrods crank Paul Turner 89 race pipe pj38 bored and boyesen rad valve cylinder was ported all that fun stuff. So I'm looking to make more power. I'm happy with it now but more would be better right?!! I was looking to do a big bore 310 or 330 but I was also curious on a stroker crank for my setup now? Like a 4mm can it be done with my setup now? Ide throw in a new piston too but mine is fresh now. What all would need changed? Spacer plate? Porting need changed? Would it be better just to bolt on a 310 or 330 and get a new short rod crank?I ride woods and old logging roads so I want good mid range and decent top end. I'm looking to have more power right when I shift gears and get on the throttle? Would a stock cylinder with a stroker crank run strong?