Very unlikely. Maybe if you went with a very radical cam, oversized valves, stronger valve springs, fully ported head and gutted intake combined with larger injectors, custom fuel management, stronger rod bolts, stonger rods, and lighter pistons, then you could get 60-70 hp by virtue of flow combined with revving the heck out of it.
And it would have so little torque off the line with such mods and would have such high octane requirements, that it would be useless to drive on the street, it would be a track only car.
Or you can pick up a turbo motor for as little as $200, take the rods, pistons, and valves out of it, swap them into your motor, have nickel alloy valve seats installed, port the head, and using a Quarterhorse, retune for the larger turbo injectors, and bolt a turbo on along with 3" full exhaust and a few intake mods, and you have a lot more than just 70-90 hp more than stock. All that would cost less than $2000 depending on how much you can do yourself.
Believe you me, those 2.3L Ford turbo motors are mean. My '87 Thunderbird 2.3L turbo is a real rival to a 4.6L V8 Mustang. And I'm not even pushing it that hard.