10mm spacer?
 

Can I run a 10mm spacer on the rear of my FD without longer studs?

Check with Rishie in the Auto RnD section (vendor forums), I'm sure he'll know.

I don't want to bother him with any more inquiries. I just bought wheels somewhere else after asking him a million and one questions.

Anyone else know the answer to this?

it would work, but won't be safe at all. i've had 11mm spacers on stock FC studs, and the lug nuts would only make 4 full rotations. so i never drove with it. 5mm is even pushing it on stock studs.