They did a great job building my 493. I avoided the maxwedge ports to keep the port velocity up at lower rpm and went with a mild hydraulic roller. All I do is change the oil these days.

I did upgraded from 1.5 to 1 rockers to 1.6 to 1 T&D's after these tests. The motor really liked the extra lift etc and feels even stronger now.

It has great street manners, gets 12 mpg on the freeway at 70 mph with 3.54's(I burn street legal 100 octane unleaded from the local pumps) and a four speed(It's on the list for Jamie's 5-speed), and absolutely epitomizes a Dr Jekyl and Mr Hyde transformation when you go from the center carb to the outboards. Unbelievable!

http://www.hughesengines.com/TechArticles/3dynotest684hp500cid6pack4bbljcross012007.php