Re: 1977 gmc sierra - 1970 c-10 drive train
engine and trans, no problem (assuming like engine and having correct manifolds and mounts)
front crossmember and brakes, no problem (except 5 vs 6 lug)
axle requires welding
Really need more details on exactly what you have, what the donor truck has, and what you are trying to accomplish.
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'83 K20-TPI
'73 C10
'79 C10-ex-diesel(SOLD)
'07 Tahoe(Son driving)
'14 Suburban-DD
'71 C10-current project
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