I've never looked at a sprinter brake system so it was just a thought, I do know the gm calipers are pretty massive and the piston/cylinder volume is larger than most...just another thing to look at. If your UCAs are rusty at all and balljoints are questionable I'd probably just buy new, they are cheap on rockauto...save you a bunch of work.At this point I have no plans to change the sprinter's MC/booster. It works well, and I am trying to keep this projects scope under control!
I need to get some measurements of the GM calipers pad and piston area to compare to the sprinter.
I don't have my ball joints tools with me currently, so I need to make a trip to the auto parts store for a loaner.