I want to get the compression up to 9 to 9.5:1 on the motor, which should definately help. The big thing that I'm trying to figure out is what grind cam would work well with the AC pump? I'm not worried about vacuum because I have manual brakes, with power steering. BTW all this stuff is bone stock. I'm just curious how dependable the purple shaft grinds are because guys claim new technology has created better cams such as the comp cams xtreme energy line and that the MP cams are a 30+ year old design.