I just found out that Paramount (they build some killer nag1's) has got a bitchin' 545rfe trans set up. Can hold 700ftlbs, new converter, and you have to send in your computer for reprogramming, wait for it...........damn near 5k. Yep, that's some coin, but for those that are building a nice 5.7 or 6.1 and want the overdrive, this could be your ticket.