I did a 6.1 hemi with a 518 and used a cable drive throttle body and used a cable for the kickdown... wasn't a direct fit, but did the job. It's nice to be able to go to the local parts store and pick up parts any time.

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