Hi Torq I put a 78 454BBC in my 49 suburban with a caveat. I put a 69 Nova clip in first and used standard BBC motor mounts.It should be about the same as your CE IFS. We had to move motor back about 4 inches to clear the radiator and do some header pipe modifications to make it clear the steering box. Im using both a mechanical fan as well as a electric "push" fan on front of radiator to insure it stays cool in Texas summers. So it can be done with some careful planning and patience. Good luck.
