just started looking at the engine for my new project,( vauxhall c20xe) i want to fit some bike throttle bodies, question is which would be the best/ nearest fit for this engine? i need an inlet diameter of 42mm minimum on the engine side and believe gsxr 1000 are about that size i also have a set of hyabusa ones available but don't know what size they are . anyone know which are easiest to respace/which will work best?

Blackbird ones were the closest i found, there sat next to my computer at home so if you need any dimensions, u2u me and ill let you know next time im on.

u2u sent