Hello Q-Heads: Has anyone had any experience with Extrude Hone vs. porting and polishing heads? After looking at Javad's site, I'm thinking maybe Extrude Hone can do a better job than me, since I have never ported or polished a cylinder head. Audi 10V, but planning on upgrading to a 20V stroker (2.5L) Any ideas? Kind Regards Rob 85 QC in 2 weeks!