A Body Disc Brake Swap 101

Anybody have any clearence issues with a 205/70r/15?

I put a hole in the oil pan yesterday on the dart leaving the driveway- the 13s are only 22in tall, and the car is just way too low. I ordered 15" torque thrusts BBP 15x7s. The 70rs are 26.3 but 75rs are 27.1, and both are 8.1 in diameter. I have to order these online, so any words will help here! I want to go with the 27.1 tall if can? I know fine on back, concerned about up front. I hit up brown salvage for an entire used 73-76 Bbp disc brake set up, I want to use that the most, even more than Dr Diff, so it's all stock parts in the future, no need to ever figure out where/what to get if I have to replace something in 5-10 years.