OKay, i have a set of Alluminum Edlebrok heads, with svo roller rockers they are blue.. if that matters.. its on a 1987 mustang gt 5.0L well we were tourquein them down to specs.. but one of the studs broke.. i have NO clue where to find it.. it was a 5.5m allen wrench.. black stud.. ANY ideas where i can find one and price for 2 of them??