Budget drag car… B-Body or A-Body?

I purchased this yesterday for $1,000.
140K, LS3 - 5.3
Needs spider gears. THATS IT!
Owner was old, tired & cranky, “I just don’t want to fix it.” He just did the transfer case. Dirty as heck!!!!

4CF2D2DC-F43B-4F15-AE27-D71E4A9EBABC.jpeg