Will you gain value in your restomod by going to a ls2 or ls3 from an ls1?

[67Rally]

Well, considering that most people that are swapping LS2/LS3's in to their cars are doing DOD/VVT deletes, you'd really just be picking up a few extra cubes (346->364->376).

For the money, I'd think you'd be better off rebuilding what you've got and boring/stroking it. If you've got the old 241's still on there, then maybe swap those out for some ls3 heads and a bigger cam with a decent intake.