I would go with a bassani X-pipe w/hi-flow cats.
I have installed their complete system on mustangs and Lightnings I previously owned and loved the fit and finish of the exhaust.
The MAC products are junk and do not fit worth a crap. BBK stuff fits o.k. for the price. I have heard Magnaflow and SLP products fit good but have no hands on experience with their products.
Have you considered going with Longtubes and matching H/X pipe?
Is the 95R H-Pipe the same specs as the 94/95 GT/Cobra 5.0?
Hpipe is the same. The headers on a 95R make up the difference for the taller deck height of the 351W vs the shorter 302