Cam swap without pulling motor
KB107's seems to be a popular choice to gain something in the realm of 9:1 on a stock 360. i've used them in the past and depending on previous work done and head CC (and head gasket) i've wound up with everything between 8.5~9.8
the thing is, you won't know unless you actually pull it down and measure. everything else is just a guess.
the only one i know that's out of the hole (off the top of my head) is one of the speed pros.
anyway, if the bore is good i don't see why you couldn't just run a hone and pop some fresh slugs in and call it soup.