Look at my thread, you're stating incorrect facts.
The heads are very nice, low low miles since all work has been done and I did clearance them for a big cam. They were also powder coated (before any machine work took place so there was no warpage), gloss black. GLWS.
2004 Comp G "The Panda"- low, e85, big brakes SOLD
2002 Trans Am- 6 speed, bolt ons or something, it's slow.
2006 Silverado- forged ls2, 4l80e, plate kit, also slow...