It's a 73 Dart Swinger, which is nothing "collectible" so my vote is drop a Blueprint 408 in the engine bay, full TTi exhaust, and backed up by an overdrive transmission and an 8.8 rear axle sourced from a Ford Explorer with 4.10 gears and disc brakes. Then try and wipe the smile off your face every single time you hammer the loud pedal. Of course if you're on any kind of a budget, well that's a different story.
:steering: