Talked to my local shop (actually just up the block from me) about balancing stud-centric wheels...since he does a lot of exotica work (mostly german with the occasional brit or pacific rim), he does have a stud-centric adapter plate that does 4/5/6 stud mounting...just needs to know the bolt circle etc for my wheels and is willing to give it a go. Anyone have that info off the top of their head? Figured I'd ask first...tia.