Cool to see Mark's on here.
Howie has his new car so look for a test soon
Pic here...
http://inlinethumb14.webshots.com/43...600x600Q85.jpg
There are lots of good wedge heads now but i'm not sure what ones can be legally run. There are some new ones that rival the 14 degree Pro Action SBC heads.
I'd think Billy Glidden's Mustang minus the nitrous could be a good Comp car. There are 8.2 deck blocks that will take a 4.20" bore.