I'm a chevy guy but would have to go with the Mustang too because that year is MEAN looking. But the Pontiac guys and 2nd gen Camaro guys got me thinking and a 70-73 Firebird would be very cool. Not overdone in the least, not a Camaro, Poncho 455 weighs the same as small block chev, aggressive looking, readily available, and You could follow PHR's project G/28 to get a ton of proven, readily available bolt ons to make the thing rock!
Remember Poncherello's T/A on ChiPs? Imagine that car hammered down on some 19" Kinesis cross laces with gold anodized centers! My next stop might just be
www.traderonline.com !