i have recently got my hands on the cross pipe from a frst which i want to use together with an efi xr3i head i want to use the same setup as the standard erst(mounting the ic next to the rad)
can anyone give me sizes of the ally rad/ics that you can buy you side as i want to have a custom rad/ic built
specifically wxdxh of the complete unit as well as ic wxdxh

cheers

 

Length wise the S1 Rad is 115mm longer than the S2 equivilant.