I'd look for the 475 -500 myself. And remember it will be under rated. I am really looking forward to seeing the #s when it hits the market. We should see something soon... I would think any day now. They should release a few to the magazines. Heres my dream take. Base Challenger- V-6. Challenger Rallye- 5.7 V-8, R/T Challenger-6.4 V-8 and an SRT-10 Challenger- V-10. I think I covered all the bases with this line-up. Game over... check and mate.