I find the 09 up for half the price or even less than that vs the early ones. I've had 3 03-08s, all ended up with spun rod bearings. I'll never install another 03-08 without pulling and checking every bearing no matter what the mileage or how clean it looks.

68 Road Runner, 69 Belvedere, 71 Challenger Vert
340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z
66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram