I’d recommend Xhaust Pipes LLC
https://m.facebook.com/XhaustPipesllc/
They are directly across from Toytec’s former location in Northglenn (if you ever went there). They were recommended to me when I was asking around to my car guy network for a great exhaust shop for my 78 Bronco. As my Bronco is a solid, clean “survivor”, I only seek quality if I’m not the one doing the work.
These guys did a phenomenal job on a fully custom exhaust manifold-back exhaust. All quality tubing, mandrel bent. They made a custom y-pipe, in to a two to one collector, then followed the stock path per my request. They tucked and clocked the muffler so it out of the way as well. Nice welds, high quality. 3” tubing for my 400ci engine in the Bronco. To be honest, it sounds better than my true dual, 468ci big block 72 Chevelle.
That set me back $350 out the door, a great price I thought. This was about 3 years ago. Don’t judge the shop by outward appearance either, lol.