The Feather Duster made the Challenger look like a yacht... Mine was scaled around 2390 if memory serves. Very light and agile cars. Only reason Mopar dont like corners from the factory is how small the FRONT suspension parts are. Ever seen the a-arms off a stock LX platform Challenger/Duster/Charger? Its baby shit thin metal! Absolute junk. As far as the motors, all you need is a set of flat tops for the 351/360 and its all over with. Your going from 8.5:1 comp to about 10.5:1. Atleast thats what I did with my 360 with the flat tops that are in it.

I rebuilt my 5.8 in my Bronco and put a set of flat tops in it with the GT40"x" heads, big cam and rr's and ill bitch smack a bolt on fox in a 6000lb truck. The motors can deff be made to run!