Budget is a lil tight, but building this for next year so a piece at a time and maybe I can get some choice parts. I can run E85. Can run any cast iron block but limited to 477 CI. I had thought about the Mopar max wedge replacements as they have casting numbers. Would the large ports be too much for a 470ish motor?? Are there any other Mopar heads that have casting numbers? A lot of racers are running hydraulic cams with the rhoads V-max bleed down lifters. They do help with vacum. Vacum is checked before race and the top 5 trucks are checked as they come off the track, so you can not readjust your valves. There is also a tear down-protest rule.