Lets see some HEMI swap pictures

The TKO is based on a T-5, but it's purely aftermarket (has a different input shaft spline as well). The TKO500 is good for 500 ft/lb, the TKO600 is good for 600 ft/lb. With work, some say they're good for 800-900 ft/lb.

Mine came in a Keisler kit. They're probably $2200 new, I've seen em used as low as $1000-$1500. The Keisler has a special modification where they cut out part of the case on top to allow for the tranny crossmember to stay intact. Well, Mine didn't line up right, so I had to cut half of mine out anyway. Here's what you've gotta do if you don't have a keisler tko http://www.moparts.org/Tech/Archive/clutch/25.html

The Viper t56 is a good choice as well. Rated to 600 ft/lb I believe. $1500-$2000 is a common used price.

The T-6060 is touted to 700 ft lb factory, and guys are saying it holds up well... But we're still not even halfway to what you want. You can build em heavy:
http://www.tickperformance.com/tick...ion-900rwtq-and-up-for-98-02-camaro-firebird/

If you're not going to build a killer t56, then your choices get very limited. I don't even know anything in that realm, but here's at least a couple leads for you:
http://www.lencoracing.com/CS3MasterPage.html
http://www.gforcetransmissions.com/tran_gf2000.asp