I have thought about doing a small bit of home porting to my stock LS6 heads, that is, when they come in. I was only going to concentrate on the short side, and the port roof. Have you experimented which would be the better option to gain a little more flow over stock? I don't feel like paying $3000 for a stage 2 port that might net me 15 more CFM, so basically I'm wondering which area in the head needs the most work. Thanks