928 motorsports supercharger

I've been reading about the 928 Motorsports supercharger kit for the 308/28 http://www.928motorsports.com/parts/ferrarisupercharger308-328.php. I've also read the very long thread on it on this site from a while back. I was curious if the folks that have this unit could provide some current info - I have a couple of questions about it based on reading the thread, the marketer's advertising, and the instruction manual.

It is claimed to be a 10 hour install but the instructions state that the harmonic balancer must be sent to them for modification. Obviously then, the installation is 10 hours PLUS whatever the shipping/modification time for the balancer. It appears to me that the purpose of the mod is to ensure the supercharger pulley does not spin on the balancer when assembled. Is/was this a problem originally? Seems to me this could be resolved without modifying the balancer. Loctite red should do the job...but maybe not?

I do not like the sag in the dyno curve between 6-7k. In my engine-building days we would not have allowed such a sag to exist and I'm wondering why it occurs. I would not expect such a thing at all in a forced induction engine unless there is some sort of fuel supply anomaly. But this would seem odd since the curve increases again. In a natural engine, it could be an intake/exhaust mismatch but forced induction pretty much neutralizes such anomolies, at least in mild street applications like this one. Any thoughts?

There is a pic of a turnbuckle support that attaches from the supercharger mounting plate to one of the studs that holds the cold start injector. I assume the turnbuckle allows adjustment of the belt angle of the SC in relation to the pulley on the crank. Seems to me there is a lot of strain there on a rather small stud. Have there been any problems with this?

Overall it appears to be a nice unit and quite well thought out. I personally do not care at all for the red hoses but that's a taste thing, not a functional one and black hose is certainly available.

I had thought about a Nitrous system for the 328 which would produce equal power output much easier, much cheaper, and with no affect on the stock car operation whatsoever but the 928 kit does seem a good choice to have the power without dealing with recharging the nitrous bottle.

I have sent the same questions to 928 motorsports but since they are selling the kit, I would like to hear from anyone USING the kit, especially over an extended period.

Thanks!