tti's wont fit 6 to sb

This is not a mount issue, it's the member, itself.

The first thing you should do is move the column shift linkage off of the vehicle and out of the way. Nearly all headers require a cable conversion of that. The only car I was able to keep the linkage in, was a Charger that I did and I ended up making a custom U linkage to go around the header collector, to replace the side to side linkage that goes from the bushing at the frame, to the trans bushing.