What kind of hurry are you in? I mean i have a J engine complete. Ill be rebuilding a GPZ 1100 this summer, we can do a swap if its the path you want to go down but im heading away for a month to Cambodia/Vietnam but ill be back mid march. The engine is out of a 82 KZ1000 LTD with 32k. I will keep ...

If you try to make the UNI head work with 12.1 pistons you will be up to your neck in piston mods that won't be worth the end result if you do have any crown thickness left. This is why i recently sold my own uni head and sourced a J instead for this exact same type of engine build using Wiseco 12....

I understand zed1015 but I've got a good GPZ head and finding a good J has not been that easy Does sound like a bit of machine work but a head skim and exhaust valve pocket rework on 12:1 pistons not so bad and obviously the idle wheel conversion What is the power like after the work? do you gain to...

I'm guessing this has been done many times as you can buy the APE conversion tower. Before I start drilling holes am I on the right track? I'm thinking Uni head and cams 1075 kit and RS34's to make a decent road going Zed Issues I can think of are compression ratio and valve clearance and carb setti...

I agree it could be an expensive mistake
and thanks Gus I'll give them a go but a long shot I think

Does anyone know if Kawasaki 75mm XC Wiseco rings fit the cosworth pistons?
The kit doesn't come with rings