I've got the CE mounts on my '33 mounted in the recommended/required position. This is also mandated by the X-member trans mount (also CE) location. With a short water pump there is 1 5/8" clearance to the back of the radiator (2 3/4" core), so a long pump won't work. There are some variants in rad mounting, so my numbers may not exactly match yours but is pretty close.