1973 Duster

do your research on the motor i think you could build up a 5.7 to make just as much or more power than that 6.1. 400hp is not all that much. add a big cam and a nice set of heads to the 5.7 and you would be there. and you could pick up a 5.7 for 1500, if you keep your eye out. heads and cam for 2500. and your in it for 4000. that leaves plenty of cash out there to do other things with.