Keisler Tremec TKO 600 5 speed

I'm getting ready to roll this under my 68 cuda this summer after a four plus years of waiting for my car at the body shop. This is a Mopar Performance 340 resto block 4 bolt main motor (non-siamese) that's been stroked to a 410 with Eddy heads, Air gap intake, Holley Street Avenger 770 cfm,MSD ignition and a TKO 600, resting on top of a Control Freak IFS. Motor is dynoed and ready to rock top hp was 478.7 @ 5600 rpm and 447 ft/lb TQ.
Torque peak 498.1 ft/lbs @ 4500 rpms with 427 hp. I've heard horror stories about shifting these transmissions over 6000 rpm but wht would I want to? This was not a drop in and go process! I did extensive work to hump and crossmember to make it all happen. I will be running 3:91 gears with a Cal Trac mono leaf suspension. I had to fess up to the wife that I do have $1500.00 or so into the drive train:toothy8: