I would think 64-67 chevelle or Lemans GTO would be a good choice. Olds cutlass or 442 clone would be smokin. all are Full frame but not lead sled heavy. Strong suspension, a tad roomier than a chevy II or nova, many upgrade type parts available off the shelf for them.
The falcon is pretty anemic, no frame , just a unibody, and the suspension is cheezie as it uses the upper control arm as the load bearing part and the lower is just the follower. Can be unstable combined with unibody construction, horsepower,spirited driving and all. Sounds like a disaster waiting to happen.
The 64 chevelle post coupe is the lightest and smallest of 64 A bodys GM had. And Tons of stuff will fit.Plus the re sale is better on the chevy vereses the ford.
On the other hand the falcon and falcon wagons make excellent drag strip cars as they are very light, but still need cages, and other structural mods to compete safely.FWIW
Fact is stranger than Fiction