A 1953 "Blue Flame" would be not be a "dipper", if you mean a low-pressure 235.

The first "Blue Flame Six" was the high-pressure 235 used in 1953 cars equipped with a Powerglide transmission. Other low-pressure ("dipper") 235s were available in 1953 (in trucks and in manual-transmission cars).

Is your 235 a 1953 car or truck 235?

Any 1953 235 should be an easy install into a 1953 truck (someone else will most likely post information about differences in 1954 car-truck motor-mounts and most likely about clutch-housings).