Great info - it helped me check on master cylinder requirements for converting a 300E to 400E brakes. If the CE uses the 4 piston calipers from the 400E, and a master cylinder change were essential, the master cylinders should have different parts #s. Since the master cylinder part #s are the same on the 300E and 300CE, this implies that the stock 300E cylinder is accceptable, no? (both the 300E and CE have the same #, which is different than the 400E number !!!
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E