You'll definately be good with R cams... in fact, you should be alright with most streetable cams. If you get something really aggressive (Skunk2 stage 3, Toda C, some Crowers, etc.), you might want to clay the motor before playing around with cam timing too much.

Instructions can be found here: http://www.c-speedracing.com/howto/claymotor/clay.html

What kind of power are you looking for?