off the top of your head
 

what is the width of system2 bore on a s2 turbo..im starting to worry about the fellpooooo i have...aparently its the only one i can get that fits

Im pretty sure that a 1.6cvh would not bore up to the huge diameter of the felpoo one. The MAX bore in my experience for a cvh is 81.46mm (+1.5mm) anymore will result in it going bang!!!

:tiff:

Felpoo in my experience are too hard and have a fire ring way too big, on many occasions it has blown through the ring to the water jacket on No3.

Go Gen ford or cometic with ARP stud n nut kit!