Recommendations for great Header & Exhaust shop Denver

Somewhat of a newbie here and not much of gear head and would like some advice on good shops in Denver area. I just bought the below parts and looking for good quality shop who does great engine and exhaust work for install. I prefer not to be bent over in the process. I know it will cost a pretty penny to install them but want to avoid being racked over the coals in the process since the parts were over $2k. I live in Eagle County but there isn't anyone I trust up here so thinking I'd come down to Denver area.

Just bought
-aFe Twisted Steel Headers & Y-Pipe (48-46001-YC)
-aFe MACH Force -Xp 3" 409 Stainless Cat-Back Exhaust (

$790 49-46001-1B MACH Force-Xp Performance Cat-Back Exhaust System

49-46001-1B).

I got hell of deal on parts but I don't want got to Toyota or even 4wheelparts as I know I'll pay through nose. I appreciate if you all could please point me in the right direction. Thanks in advance.

 

Oh and these parts are going on my 08 Taco with S/C & aFe Magnum Force State II Si Pro Dry S Air Intake. It simply isn't enough power to climb the pass when I tow (have down shift to 3rd or 4th gear) and without towing I have down shift into 5th on the 7% grades. I haven't been able to afford both a re-gear and these performance mods, so the re-gear (4:11's) will be the next step after the above mods are installed once I save up again. In 2010 High Country Performance 4x4 put my toy tech lift 4" lift with my 285-70/17's. Also who is reasonable for the re-gear work? Should I got back to HCP4x4 or someone better? Thanks again.