Re: BF goodrich Radial TA
If you want to stay 215 up front, may want to try checking around on 215 65 15s. I run those on the front with 245 60 15 on the rear of my 69. If you check the diameters, the 65 is not much taller, but it is roughly the same as the 245 60 in rear.
Looking at the Radial T/A sizing chart, the 235 60 15 is 26.1 inches, the 215 60 15 25.2 inches. Maybe that's what you're looking for? You don't say what rims these are going on, but if you're considering the repro tires, I will assume you have correct 69Z 15x7 rallys.
I personally prefer the tire diameters to be pretty close, with the front just a hair smaller if it can't be exact. I tried 215 70 15 on the front (I have 15x7 wheels front and 15x8 rear), and I (and one of my buddies) could see the difference, and it made me crazy.
69 'vert project big block/TKO 600 RR
68 'vert driver RS clone -- gone!