Getting ready to swap a 5.7 into my 73 Dart Swinger

The exhaust manifolds will not work. The LX platform ones dump the outlets right into the firewall and do not hug the block tight enough. The trans will not fit without major floor and torsion bar crossmember surgery. It will also require a custom built drive shaft. Trans needs wheel speed sensors in order to work. I believe Chris over at Hotwire was working on a kit to be able to use the nag in a retrofit application