T-56 Transmission Install Thread

I never paid a lot of attention to this thread because I figured my Tremec TKO 600 was enough gear and torque capacity for my stroked 6.1 (now 392) Hemi 'Cuda. I do like the 6 speed in my Challenger Scat Pack and now have bought a 707hp/650tq Hellcrate motor for the Cuda, necessitating a beefier trans to go with it. I believe Tremec has a 6 speed called Magnum that will hold up to the HC Hemi. Can anyone provide any input on this? Is this pretty much the transmission you guys are talking about? I enlarged my tunnel for the TKO and sure hope it's enough to move on to the 6 speed. All input appreciated.

The magnum t56 is rated for 700 ft/lbs of torque. The tunnel mods for the TKO will not be enough for the t56. The whole tunnel has to be remade for the T56, and the center of the crossmember has to be completely re-worked. It’s quite a bit more metal work than what is needed for a TKO.