LS1 Swap 68 Camaro questions

[Vicinity]

Couple of quick questions. I know the Fbod oil pan needs modification to fit (with setback mounts??), can a gto pan be worked over the same way?

Will the GTO accessories work like the Fbody accessories will? (IE Fit)

Basically, I have the choice between a GTO and an Fbody LS1, I'm wondering which would be easier and cheaper to swap in. The Fbody LS1 @ 1600 for everything (minus the harness) and the GTO @ 2200 for everything (including harness).