Kleeman sells thier own Supercharger system, and when you purchase it, your only buying the parts not laybor or the computer remapping.

I talked to one guy this morning and he says, after you install everything you just UPS the ecu overnight and they will recalibrate it for low pressure map and remove the speed limiter so your good for 180mph or however much HP your motor puts out.. $1000 and a one day turnaround. not bad.

I'm talking to a couple other guys locally, I haven't got any response back from Derek's guy who's supposibly a Bosch tuning engineer? I'm in no rush and I know he's probably got bigger fish to fry.
Also waiting on details from a ferrari tuner up near Rosamond CA at Willow Springs, I'll let you know the hourly rates for them. still awaiting response.