Subframe connectors for a driver/cruiser, necessary to weld to floor?
I'm a believer that welding the connector to the floor is better than not. I went that route on both of my Darts. Since the '68 has a back seat, I ended up pushing the 2x2 tubing through the floor, marking it, slicing off the sides where it penetrated into the cab, and rewelding the top back on while welding it to the floor from the top. Now, the carpet lays flat. Lots of ways to skin a cat on subframe connectors.