Does anyone know what size bars were on the R7U cars.

I read that the drivers asked for a smaller rear bar on them and I'm assuming that they probably had a smaller set to begin with than the 36/24s

Also, I'm looking at Prothane bushings and they've got 32/21 designated as 1LE which is the size I have on my car (32/21) - so what's with that? I thought the 1LEs were bigger.

Thanx