they measure 9 1/4 inch from the underside (point to point) if that makes any sense.

Can these calipers be fitted to 315 disks behind an escos wheel....

PLEASE SAY YES brackets not a problem as we have a machine shop at work and a guy who works for me is gonna do them on his lunches for some beer tokens.

OR i am open to a 315 brake setup in exchange for these calipers if anyone has a set to swap? They have good pads in them 10mm+ on all 4...they came off of abmw b12 alipine 6.0 V12 which has 334mm disks as standard so they must be good for some braking force and be suitable for some BIIIIG disks....

Dan