Greg ,
I have two 69 Z's I am considering selling . Not sure if they fit your bill . Both are Van Nuys cars . One needs to be restored and has been certified by Jerry MacNeish . It is all original down to the T3, spiral shocks,AIR equipment,reverse lock out... everything . Blue light, endura, M21 and style trim .No docs but pretty obvious what it is in unrestored condition.Daytona yellow black standard
The other is a Van Nuys RS Z with a tattered build sheet still on the tank but enough to tell you what you have.Also have a bunch of California DMV paperwork from 1979/80 and an old DMV print out. Was originally owned by two lezbians so I consider that's good right ?
Has original rear end but motor and trans are gone but I have a DZ block dated VO124DZ and the car is an 01D build with a VIN about 2000 after the car so pretty close . The chassis is in excellent shape. Original flat hood non D80 car which I think is cool . This car would be real easy to do and is in your price range. Lemans Blue ,black deluxe 712