A tremec tko 500/600. Or visit www.x2cmotorsports.com. What are you're plans for this car street/stip, and what does it weigh? My 418 makes 581/539 at the flywheel, I run a tremec 3550. On the street it should live for a long time, slicks and hard lauches, I'll be leaving it at the line in pieces
mike.