Stillen Supercharger Kit Installation cost?

Chemicool

Hi. I recently have been considering putting the Stillen SC on my car and I asked for a quote from a well respected Tuner garage in Houston. I am also going to have the clutch/flywheel/csc upgraded at the same time. Oil cooler also. So they e-mail me back a quote of 22 hours labor for the SC install. I ask is that labor estimate including the clutch? She e-mails me back and says NO that is just the SC install! Stillen's website quotes 12 hrs for a DIY install. So I find 22 hours for a well appointed shop a bit much. Then she sends me the itemized quote and it showed 23 hrs for the install! Plus, a lot of "extra" charges tacked on. So I called Stillen directly and they only quote 16hrs total for the install with 125.00 pre SC dyno/ 125.00 after SC dyno. Crazy. Anyone have a good shop for this type of work in TX?