71 Dart / 5.9 Magnum / Procharger

(This I think you know already, but I’ll just put it out there for those that don’t already know.)

You may loose a pound or two with the intercooler but you gain in cooler air which is more air than the heated air at a higher boost, so, that’s a win win!

With a 10 lbs. pulley, you’ll see that at the top end of the pull. Generally speaking a rising boost curve. (I think that’s cool.)
While on the way up the curve of boost, it is just like slowly adding cubic inches. At max boost, you will have added roughly 60% (or) more engine.

(Insert a Doctor Evil laugh here!)

That is already a healthy (N/A) Street engine.