In reply to 4shadesofblue:
You can make a little more power with a good head shave.
Here's someone who did 172whp n/a on a stock bottom end.
http://clubroadster.net/vb_forum/59-irtb-individual-runner-throttle-bodies/81194-my-172whp-n-engine-stock-bottom-end-no-porting.html
There's a nice middle ground in there even if you decide that you don't want to spend the money on cams/pimp valvetrain, and ITBs.
