The 3rd refresh of the original Mustang sold in '69 & '70 is one of my favorite fastbacks, not just because of the TransAm racing looks, but also because you get so much more car for your money. For the same price as this next feature you would be shopping for a rusted out '65 or one of those coupes converted to fastback. Find this 1970 Ford Mustang Fastback here on eBay currently bidding for $9,100 located in Honolulu, HI.
Although they share 99% of their parts, the 1970 Mustang is easily distinguishable from the 1969 model by the 2-headlight (and funky tri-bar turn signal) front end, plus recessed rear tail light lens and no faux brake scoops. This one is listed as an all original one-owner 4-speed 351V8 equipped car that has been off the road since 1999 and will need some reconditioning.
The 5.7 liter V8 under the hood should fire right up with a simple fluid change, but you can buy a cheap USB borescope that can be used to inspect the cylinders through the spark plug holes (and all sorts of other fun stuff too) if you want to check for rusts on internal parts.
The interior isn't perfect, but the seats, carpet, headliner, center console, and door cards are all in place. If the dash looks like the Mojave under that cover, you can replace the entire thing for a few hundred bucks from various online Mustang parts suppliers. That is one nice thing about a classic Mustang, you will never go wanting for people to offer you new/used parts -- everything is available, from the smallest fastener to entire new sheet metal body.
See a better way to get into something with louvers and a wing? firstname.lastname@example.org