Potential 73 Dart Sport owner...

I've been looking at the darts/dusters/demons for quite a while now. I've come across a 73 dart sport with a duster front end on it and I'm curious as to whether its a good deal or not. I've never owned Mopar anything but have always had a soft spot for one.

Everything is there minus the engine and transmission. It has schumacher mounts for a big block, tti big block headers 2" collector, full true dual 3" flowmaster exhaust... what else what else... an aluminum drive shaft, "cal-trac suspension" which i'm not familiar with but I will be googling...

8 3/4 rear with 4.56 posi, summit drag starts 15x3 on front and 15x10 rears. Paint would be driver quality I would say.

My question is, is 4500 too much of an asking price for it? I have located a 440 and 727 to put in it...