Would not touch it. I hate putting a puzzle together that is missing pieces. Especially if you never messed around with that type car and don't already have know where you can get donor parts at a reasonable price. Challengers and Cuda there is no such thing as a cheap parts dealer or junk yard.
It would have to be one of those of a deals like, " heck just get it out of my garage" type deal.
With the above statement, your inexperience may dictate missing out on a nice car at a decent price. 68ChiiiiHen has the know how and capability to put it back together better then Mamopar did. I've seen his work.
Now - to answer the task at hand.
You could do an inventory, as someone above suggested but your sure to be missing something. Heck it may even turn up. Provided its not high dollar stuff missing, I would'nt sweat missing the small stuff.
You have a - what appears to be a solid car. If the floor and trunk pans look good, the rear quarters are the only gamble. Lets say it was a crap install job on rear quarters and you have to replace them.. Well.... thats only $2k additional dollars on what will probably be a $40-$50k car. In the big picture I don't think I would worry about the rear quarters.. You know what the worst scenario is, but what if they were installed decently? Put a check on the good side.
My 69 Superbee had ZERO rust.. I elected to replace 1 rear quarter because it was suggested to me by Mr. Alan who recognized rear collision damage at some point and who I value his opinion very much when it comes to this stuff. It wasn't a horrible install job and they probably couldv'e been worked a little, to look good, but the level I want my SB, I elected to replace,.
Now - Some questions... Is there an asking price? If so,, What?
I think I'd start with a fat wad of 100's on my next visit with $8k in one pocket.. and an addtional $2k in the other pocket.... and a blank check, just incase he wants $500-1000 more.
Matching numbers, solid car? You have the time mate....I'd love to help you extract and or even look at it with you...
GO FOR IT!!!!!
Don't wait too long.... it might slip away... 1 owner matching numbers... WOW~!!!
- - - Updated - - -
Definately put on a rotiserrie... LOl.. I know where theres a real nice new Auto Twirler with ball bearings for $1000 - LOL