Killer if the motor is tight and runs good you will LOVE the centrifugal supercharger and it's a smart choice with higher miles
I look at them more as belt driven Turbo meaning if your not in the boost they're not stressing the motor and you'd never know it's even there (ok with the Novi you would hear it

)
Even with an entry level intercooled Procharger P-1SC I was able to take my pathetically slow 99GT from 235 RWHP to 384/384 on a very safe street tune for pump gas. You can dam near double your numbers on your race tune. I installed it myself in one day and was driving it that night, it's really not that bad but it helps to have it all planed out in advance.
I put a SVT Focus Pump in my tank with the Bowl Mod and used my old stock Lightning 90mm Maf & 42lb Inj's.
So I could keep driving the car 24/7 I actually put the pump and inj's in a week earlier and had my tuner give me a few start up tunes for different combo's so the day I did the Maf and Supercharger Install I could drive it.
Everything went very smooth and although it's not the prettiest kit the before and after was pretty impressive for crappy looking 4.6 engine compartment.
Amazing what one day and a can of Gunk can achieve