Here's the new tires.  These are BF Goodrich Drag Radials, 275/50/15 mounted on 15 X 8 weld Draglites with a 5.5" back space.  They fit real tight.  I'll need new tail pipes as these do rub my current setup.  I'll also have to massage the front inner fender with a BFH.

Fronts are 165R15 on Weld 15 X 3 1/2 wheels.