15x10 7.5 BS fit????

I'm considering go to a 29" tall tire

Same here. The 28's are over revving me through the traps.

They look good but don't hook like the MT drag radial.

x2 on MT's. I have run sportsman pros on both of my cars and they work flawlessly on and off the track. Safe in the rain. They are a drag slick compound with full tread and a wrinkle wall design. I wouldn't consider anything else on a street/strip car. I run 25 psi on the street and 19 psi at the strip.