Heads ,Cam ,Intake, Vs Supercharger

If i had the money to get the supercharger, I would, I think 5.0 did a test w/the edelbrock package and a vortech s trim, the s trim gave more power to the stock 5.0. Don't remember what issue though.

That combo should be worth about 70ish more HP than stock. so, its equivalent to 7-8 psi of boost. If the motor is in good shape, a nice novi 1000 pullied to 8psi on your motor would be AMAZING!

as for currently, the combo you have should get you into the high 12s w/traction or driving.

Actually there are basically stock Stangs (lighter fox bodies) with exhaust, lots of gear and lots of traction that run solidly into the 12's - with traction yours should easily run 12's.

Naturally aspirated vs. boosted is largely a matter of choice. There are pros and cons either way. If the engine is in solid shape, it's hard to beat simply upgrading the fuel system, and adding boost to the stock motor. It works quite well, maintains near stock drivability, and if you can keep your foot out of it/have a good tune, fuel mileage doesn't suffer much at all. That usually can't be said about h/c/i combos that produce comparable HP to a boosted stock set up.