1989 Suburban 2WD 3/4 to 1/2 Swap?

[Crank]

Originally Posted by SCOTI

The upper a-arm studs are likely larger on the 3/4 ton so the shafts might need to be drilled out to utilize the 1/2 ton arms as is.

The x-member is definitely interchangeable. I have a crossmember from a 1/2 ton under my 1-ton dually.

I guess I know that the entire crossmember will bolt in it, but that’ll just about require me to pull the motor. My question I guess is, are the crossmembers identical? If so no harm in leaving it there, but if there is something drilled larger for 3/4 arms, but then would make the holes oversized for 1/2 ton components I’ll swap the whole assembly.
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