Hi, im looking into getting a 51mm tb made up, theres a guy at a local machine shop that says he has done simular things before and that he would give it a go, i just wanted to check that the bore actually gets opened up to 51mm as i read somewhere about the tb's where someone said 50.8mm, sorry if this sounds stupid but ive tryd searching and cant find anything. just wanted to be 100% sure.
Thanx Alex