Gen II 1507 Build

[Maj]

i felt the the 83mm bores on my receint turbo build were too thin between to use std methods and o ringed the cyls, put a receiver groove in the head and used a copper gasket
bit tricky as i had to siamese the o rings at the narrow point
the zx14 are close std, buggered if i know how they big bore them and get good sealing