Goin V-8

Robb you can go with schmacher mounts or any stock replacment mounts. I beleive I still have my stock 273 exhaust manifolds at home, so you could have them, but it would not be the best for performance on a 360. I know a couple of people have put magnum exhaust manifilds on early a bodies but they are from a dakota and not sure what years.
I think for cam selction, it would be best to find out what comp that 360 is running first.
The other thing is, you will have to mod your trans tunnel a bit for a 727, but no real big deal just something to think about.
Good luck with the swap.