I have an Evolution 60NX that I decided to do some work on this weekend since I had it apart to replace the bearings. I ported the intake port a bit, staying away from the edges to keep from dorking up the liner. I also did some work on the crank and a bit on the case. The crank and case, I just put a radius on the edges to try and smooth the flow out. I didn't get into enlarging anything.

What do you porters and tinkerers recommend as far as light port work or have I done enough already?

A web search turned up this page that looked interesting as well. So I may do some portin' on the boost and transfer ports as well. I'll post pics as I go if anyone is interested. I have a new close up lens for my Nikon that I want to play with as well!