I did some searching and found some interesting stuff... check out this link to a topic:
http://www.j-body.org/forums/read.php?f=2&i=320760&t=320760#320760

I am just buying the crane rockers off a differnt source than Howell, so what exact stud do i need?? That thread is confusing... the last post says they are 10mm bases, which would mean you would buy the v6 studs, because the 99up would be the ls1 stud.... so I am confused because they are contradicting themselves.

Anyone know the real answer to what stud i need?

----------------------------------------------------------------
www.bradsairsoft.com