Dougs 67 Notch build

Verrrry nice Cuda build! May I ask the rear tire and wheel size?
Thanks! I started with a 73 8 1/4 A-body rear axle assembly then I added 15" X 8" custom backspace wheels with 4 1/8" backspace. Then
I put 275-60-15 tires on the car. I mocked everything up on CAD to make sure it would all fit.