I have a 4500 lb 75 coronet wagon with a 489ci stroker motor making around 650-675hp. I am running a 31" tall tire with 4.30 gears. Iwant to over build it, since I have a few upgrades in the works, so I would nlike it to handle at least 800hp. I had an insedent at Quarter aces for the Chryslers at Carlisle nationals and ended up with a broken trans, bent driveshaft, dented mufflers(who needs them anyway, and bolts sheared off the rearend pinion yoke. So, I am starting the repairs by trying to get a really good and strong trans, any suggestions, or help you guys can give me would be great. Thanks.