Alright folks

My sierra uprights are off a 1990 sierra sapphire which has vented disks. I want to replace the calipers with ones that take solid disks. Will the solid disc calipers fit straight on to my uprights, I seem to remember something about there being two versions of the sierra upright.

Thanks

the two versions (as far as I know) are std sierra like the ones you have, and sierra cosworth ones. I would assume that you could change the discs and calipers to suit. I'm sure someone else on here will know more.