From Lysmachia:
Driveline Service of Boulder: Owner is Ron - He is awesome. He does lots of work for CoTTORA and knows us. He just got in some special 125 wall Toyota tubing that he said is BOMB proof! His number is 303.447.1641
Chacon's Muffler in Longmont They did a great job on Troy's new exhaust. 303.651.2938
Buds Muffler in Denver.
http://budsmuffler.com/ (303) 629-0934
A discussion of Alignment shops is here:
http://www.ttora.com/forum/showthread.php?t=147379