26x9.5x14 QTP on 5.5” Rally Wheels

The tires in question are on the rear of my 72 Duster. It is BBP. What I am trying to accomplish is to get some traction back there with a 3.91 gear. My older brother and I are planning to take my 71 and 72 Dusters to the Nationals in August, we haven’t been since we were kids and I’m setting my 72 up for him to race. With that said it’s not a race car it has a mild 71 360 with under 400 HP but I am trying to be as cost conscious as possible because my 71 has a long way to go and a short time to get there to be ready by August 11. My neighbor let me borrow an all out slick for it but then I’ll have to add long wheel studs and a loop to run them. Here is a picture of the car with the 28” drag slick. Looks like my best bet is to just buy 15” wheels for the rear.

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