not nessesarily, especially for an auto. automatics soak more power. if the heads are stock one of those superchargers may give it 70 horses or so ( at around 5 or 6 psi boost. now, if stock its 225 flywheel hp, add 70 ( all this is ball park mind you ) thats 295 at the fly wheel......figure parasitic loss and 255 rear wheel isn't that far off. maybe it isn't tuned perfectly and there's more power to be had.
what you need to do is focus on the car, if it's quality built, been cared for, isn't butchered etc....... the lentech valve body is a good one i think that one runs about 400 bucks.....
figure a stock 5.0 in nice shape well cared for may be worth 4 or 5 grand ( this varies but i'm trying to help you add all this up in your mind ) , that novi 1000 will cost about 1600 bucks, that valve body another 400 bucks, plus the maf meter, the exaust, and all that.........you have an easy easy 2,000 in upgrades, probably clser to 3,000 if you went and bought all that new. is this stuff you'd do to the car yourself?? if you want the car to keep, drive, etc, and you planned on modding it, then sounds like a good deal. if you want it to re sell it or make money on it forget it. look at it this way, the longer you take the cheaper it's getting.....lol......about how much is 7250 canadian in us curranccy anyway????