Dual exhaust

I've had 2 1/2" exhaust systems made to fit 64/75 Barracuadas. I modified the cross-member myself, cut, bend, weld, using as much of the original metal as possible with about a 2" wide peice to fill in.
The last time I put a dual system in myself useing a tti 2 1/2" kit and liked the fit better, also has a cross-over tube. tti web site has deminsions for modifications to the trans cross-member.