Cutting the floor is no biggie but cutting the torsion bar cross- member is a bit more involved. I would not cut my cross-member for a TKO but a T56 magnum might be worth it.
I like how Silver Sport replaces the upper hoop with a newly designed cross-member. A chassis guy suggested that to me a couple years ago instead of raising the hoop like most do. Not sure which is the better approach.
For a B/E body TKO install you don't cut into the torsion bar crossmember, for A body yes, the upper tunnel loop is too small
the T56/56M you'll need to cut out the upper loop/hoop, and trim out some of the lower torsion bar brace to fit the new upper loop/hoop in, but the torsion bars/area remain intact
