No youre right - the greens were put in after by the garage that put it in for the owner , the engine was standard internally, I have been told that the gasket was a group a when put together,. the car was then sold to the garage (tgr nmotorsport) who put the YB in, I had it from them. I have heard it run but have not driven it as yet, as the rads are not in, and needs finishing so thats why wondering which way to go with it.