On my 67 coupe, I'm running 15x8 Cragars (4.25 inc backspacing) on the rear with Nitto 275/60/15 radials; 15x7 Cragars on the front with 225/60/15 Falkens.
Chassis is stock height front and rear. The larger diameter rear tires raise the back end by about an inch.
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