Someone beat me to the punch, Fox body Mustang, lots of them around, cheap, and tons of aftermarket support for suspension etc. Probably someone has done a SBM into one somewhere.
There was a really clean looking Chrysler 5th Ave for sale locally on the weekend, $500.00 asking, ran and drove, gone really quick, otherwise it would be in my driveway now. Also saw a 77 Cordoba for $1400.00, looked pretty clean too, thought about it, gone too.