The 34 is definitely not the Gehlhausen car. It carried a #4 and was a Huffaker chassis that Bigelow had driven as an Indy car. It was my understanding from Carl Gehlhausen that it was the "MG Liquid Suspension" car that Bob Vieth drove at the speedway. Tom Sneva won 6 times and had 12 top tens in it in 1973. The 48 must be an early car for Bobby Hillin's Longhorn Racers because it's not a Stapp. The cage looks like the Grant King design but it's a bolt on and the chassis might be a Ronnie Ward.
I'll take a flyer at the #11. With the american flag on the hood it looks like one of Karl Kinser's cars.

Vern Plotts