I found a one off custom set with a center drop and once we modified the down pipe, it cleared my throw out. Center tunnel is stock but we widened it a bit and cut back the passenger floorboard slightly. I had to make custom floor mats but that was no big deal. TC shifter is out of a disco one and puts it in the right spot.
I still have the holly headers that they recommend for the 6L80E if anyone wants them.
Should give me 70+ more HP but over 100 ft lbs of torque. I've never been a HP guy but draggin up the passes with that trailer sucked.