Thanks a million for all the great information on this subject. I'm glad now that I went with the advice from the HD stealer that said to change the heads if I wanted to increase the compression. My final mods are as follows...HTCC ported heads, race tuner, push rods, lifters, thunderheader, fueling oil pump, S & S gear drive with 570g cams and of couse 10:1 SE pistons. God I hope this is going to be a good combonation. No 2 people ever seem to agree on the best things to do. But taking bits and pieces from everyone, I believe this combonation should perform very well for a bike that I intend to ride and not drag race. Thanks again and I'll post my results when I have the bike dyno'd.
Opee