64-69 Rambler Americans are about the same as Falcons and Chevy IIs. Only more interesting because there are fewer or them seen. They will take any drivetrain with minimal work, though of course AMC guys prefer to see AMC engines. Since you mentioned daily driver, you probably don't want a gas hog. The Jeep Cherokee 4.0L drops right in as it was based on the old Rambler six. Not hard to put the EFI in. Scarebird makes a disc brake kit for the front, several vendors make them for the rear. You might want to use a Ranger 8.8" axle, but the early Ranger 7.5" fits and is a lot lighter, and strong enough (thinking DD here!). A better engine and trans for a economical yet spunky DD would be a Ranger 2.5L EFI four, or a Mustang/T-bird 2.3L turbo motor. If you find one of those it will fit in the Falcon/Chavy II/American/Dart compacts as well.
Want something a bit more modern but still easy to drop almost anything under the hood? AMC Hornet/Gremlin or Concord/Spirit. Made for small blocks! I've seen a big block stuffed in one, but that's tight and a lot of work.