Looks like a Bell Iroquois to me. Two blades above a box.
desert_max, Im gonna disagree with your 'clunkers' label on the economy cars. For one, they were inexpensive, very simple to repair, and they didn't need much, as they were understressed. I had a '63 Corvair Monza Spyder, all Spyders were convertibles. It had > 1 HP/cubic inch, and a turbocharger with a knock sensor, pretty-exotic stuff for GM and the domestics in the mid-1960's; a flat floor (no driveline hump), and a 4-speed. Yes the swing axle needed a transverse spring, it used the same transaxle design (single U-joint halfshafts) the VW beetle did for years afterwards, and Ralph Nader didn't attack that like he did GM's car. The Gen II Corvair had a great-looking body, and John Fitch made the Fitch Sprint, and Yenko, besides big-block Camaros, had a Corvair Stinger, which could give sports cars of the day a good showing against them.
The Falcon Sprint was available as a V8, and the Mustang was Falcon running gear. Yes the Valiant was the basis for the Dart, and the first-gen Barracudas. The Dart could take a 283, 340, or 383, and dealers built specials like the Grand Spaulding 440, and the Hurst Dart 426. Of course, you had to be dedicated to have something like that. Those big blocks were more dragstrip weapons.
Later in the '60's, Mopar got Dan Gurney to do a Barracuda model with 3-2's, side exhausts, and suspension tweaks. Gurney also did a Mercury Cougar, without googling, I believe it was the XR-7G (for Gurney, natch). and that model was immortalized on one of the James Bond movies. They command a premium when they come on the market.