baha
+1y
1)For a traditional body drop you should only need to section the firewall, that is assuming you are lowering the body so it matches the frame. If you lay frame already, you shouldn't need to cut any more of the transmission tunnel.
2)It's personal preference but in my opinion angled makes the floor look more factory in appearance.
3)Sorry, I don't know the answer to this one, but I think it will clear since you are only doing 2.75".