Looking fof a gen 4 truck motor 5.3 or 6.0 would like a driving distance from atlanta.

Any of those work.

LH8,LC9,LY5,LMF,LMG 5.3L, 58x
LY6,L76 6.0L, 58x
LS2 6.0L, both varieties.
L92 6.2L, 58x