If you do the work yourself, you'd be a bit above $3k - kit looks like ~$2800+tax most places, they say you need the 'SN95 adapter and 3/8 intake spacer' too, then you'd want a fuel pump & injectors if yours are still stock, and then the tune. The kit says ~360hp at the crank so at-the-wheels is going to be a bit less than that (especially if you have an automatic).
It's a very common upgrade, I imagine others (in the parent forum too since Foxes would use roughly the same kit) could give you some real dyno numbers.
I went the turbo route myself - much more work but 450 at the wheels was well within reach for a significantly lower price (if you're not afraid of a 'budget' kit which I wasn't). Only problem these days is there aren't many budget kits left - on3 seems to have their 94-95 kit permanently on back-order, and the place I got mine went out of business years ago (Boost Brothers). Not sure what I'd do if I had to do it again today - probably modify one of their Fox kits to fit, or go with the Trickflow setup. There's a Procharger available but that's around $4k.