I have been real happy with the 418" my Dad and I built in 2015. It has somewhere around 7-10,000 miles on it and a few hundred passes, and 4 drag weeks now. The ring seal is still excellent and it usually sets a new best every year as other parts of the combo are refined.

It's an eagle forged crank with Molnar rods and Autotec pistons. Its a 10:1 pump gas deal. Its been 10.42@126.8 in my 3550lbs 68 Barracuda. I think 6.57@102.5 is its best 1/8th mile off the top of my head.