New Project

Ok. So here's a question. Demon is a slant 6 car. There is a 73 or 74 duster V8 car near me I can get for cheap. Should I go that route or go aftermarket like I did on the 72 Dart. Reason I am asking is I need to put an oil pan on the motor and want to get the right one...I was going to rebuild the suspension it is on, but can't find S/6 to SB mounts....