Lloyd I will answer the lifter issue if you let Dan and I dyno the '72 HO when the time comes.
We use Crane lifters exclusively now. We have made changes on the dyno with several of the big brands and smaller a like. Cranes make the most power and hold the rev's well beyond anyone elses. One major brand even gave me a free set to test and promised 20 hp over the Cranes. This was right before they would be available to the public. All they asked was for a copy of the dyno session. I gave them the copy of the session and the lifters back. I am sure they were surprised they were down 17 hp and about 600 rpm to the Crane lifters.
The Judge ran into lifter/rpm issues and that is when the test sessions started to inclued lifter testing.
The T/A's RA IV was being turned to 6800 on the dyno on the Cranes to see where the harmonics would change. They did not and I was getting a bit stressed about how high my numbers matching motor was going. Most of the session was done with a top rpm of 6400. In the past the other major brand of lifters were a mess by 6000 rpm and they were the vaunted anti-pump up variety.
Mark