Pro Touring 10K

OK guys need you 2 cents worth on this. I have a donor car I can buy for 300/400 bucks. An X racer. I went to look at it last night. Pretty rough. It's a 1973-74 Duster. It does have the disc brake set up and a V8 K member. And the drop center link. All to convert my car to Large bolt pattern and disc. The meaning of fresh must have different meaning to this guy than myself. Because if he meant freshly removed from the barn then he would be correct. The Ford 9" needs work at best. the doors and fenders are in decent shape and the rest is pretty rusty. no interior to speak of. Is it worth the 300/400 for the parts I could use? would try and sell off the rest. Yes I could just order what ever I needed for this build, But I'm sticking with the 10K theme as close as I can.
Thoughts?