Just curious, are you going to build all 'x' amount and then do a test fit? Just curious, cause what if you build 20 and all don't fit? Or you build 20, and you find out they crack under tension or something like that?
Also, the i4 guys keep on posting seperate lists and the one from rainmens is different from the big list. Everyone should just tag on to the big list (uhm)
The pulleys are designed in Solid works and then plugged into the FEA program to ensure it will not fail. I have a local car that I am building the first ones on and testing. So they will be perfect before leaving.