Quote: 70 Challenger: 3006lbs base. 70 Mustang FB: lighter. 69 Mustang FB: lighter still. 67-8 FB: lighter still. 65-6 FB: lighter still. 65 Notch: you get the point.
How much is a -65 Valiant ?
I'm gonna make a confident guess and say the Mustang would be notably lighter than even the 65 Valiant 100. 50lbs lighter? I'd be surprised if that base Valiant weighed 2600lbs.
64 1/2 Mustang - 2449lbs (or 2445 from a different source)
That, my friends... is about as light as a muscle car is going to get, as a starting point.
Staying with the 'muscle' (no one likes the notches...) lets start with a 65 fastback, already 500lbs lighter than the E-body before you start adding stuff. Hell... even i was shocked to see that a 69 Fastback is 300lbs lighter than my 70 Challenger. Thats just not fair.
Anyways... again, these are starting points, BEFORE you add everything. And i do mean everything. But... you're adding that to any base car you buy, AND you can control what you add. Yes, it helps to start with THE right car.