Almost forgot. Pics or it diddnt happen.

With some serious TLC, she will be ready for COTM.

Glad the lady gave you your money back on that deal, the Regal will look great after a good clean up, congratulations on getting a better deal, and actually getting that SuperCharger!

With any L36, or L67 engines over 100k, I'd suggest testing to see what LIM Gasket it has, it can be done easily with a DVOM, if the Lower Intake Gasket is not the redesigned aluminum framed ones, then I'd suggest having that LIM Gasket changed, as the possibility is strong for hydra-lock to happen if you have the old LIM Nylon 6,6 Gaskets, they are known to fail, especially if the coolant system was not properly maintained.
If the LIM Job needs to be done, at least you'd be servicing your oil, and coolant, so you will know for sure when you'll need to service those things again.

If you have the old style LIM Gasket you could try to keep driving it till you start to notice coolant levels dropping abnormally, although I do not suggest that route, I did that and came close to having my motor hydra-locked, that could have easily made it throw a connecting rod, which would have ruined my motor.

Once these L36'* & L67'* have the LIM job done the motors are really solid motors, as long as you service things that need servicing regularly.

Old style new style with aluminum frame. I am asuming a DVOM is some acronym for a boreoscope? I dont have one of those and gasket sets look to be around 50 bucks. Sounds like better safe then sorry. I am also curious by nature and kinda want to examine the design of the manifold and blower.

I think what William is saying is, use a digital multi-meter on continuity mode to test the gasket material between the block and LIM. But, you should be able to tell just by the color of the gasket. Black=plastic, shiny=aluminum.

That is what I meant, sorry I was not more clear on how to test that.
As Mike says you can tell by looking at the gasket, there should be enough of the frame of the gasket visible to tell if it is black, or shiny aluminum.