I am pretty proud of the AMX. The 421 cubic inch small block Mopar in the AMX is nothing special. It has Bloomer heads, Bloomer 4.125 crackshaft, Bloomer 6.250 rods, Crower off-the-shelf 31409 cam shaft, Unported Is Super Victor intake, The cheaper Hughes rocker arms, Flat top pistons with 11.2 to 1 compression, A stock block. It does have a vacuum pump, It burns alcohol as a fuel, Has a Coan converter, And A 727 specialist TF 904. The car weighs 2630 pounds without a driver and the driver last night weighed 240 pounds. It made 5 passes yesterday at over a 116 miles per hour in the eighth mile. Lots of people do not believe in the Wallace power speed calculator. But if you use it as a guide 2870 pounds at 116.6 miles per hour takes 707 horsepower. I can't say honestly that I believe the engine makes 707 horsepower but I have to believe that it makes an honest 680hp that is a bunch for a conventional head with a non offset intake rocker arm. I am pretty proud of it.