This whole post gives me some hope that I can go after my '92 Mustang a little more aggressively. I hit it with OP and a 4" cutting pad and it came back alot, but there are still swirls there. I didn't have anything more aggressive, so I quit there.
I actually went straight to LSP from OP with no compound marring, so is early 90's Ford paint hard? It seems to be.