Sloppy Steering, HELP!

I have a 92 coupe, 5 speed, 5.0.

The steering absolutley SUCKS A$$! Seriously, it's like driving 78 Caddy El Dorado.

I keep having to correct the steering when I'am driving(I know alignment) but what pisses me off is that I can move the the steering wheel like 3''s and the car won't change direction. So I can go side to side with the steering wheela nd car is dame direction. I WANT to keep P/S, but I want precise steering. What do I need to change out to get more precise steering. Could it be the sidewall on my tires, they are 245's on a pony rim? I don't think it's this. What can I do?

How does the quick ratio compare to the P/S system on the Mustang? I don't like to strain while driving it, it is a street car.

I've driven MANY non p/s cars so I know the work that's involved, except on a stang.

OK. I went over it today, teh rack looks good on tehoutside, can't realy tell if it's bad. I shook the tie rods and they are on there solid. What get's me is my dad had me turn the wheel while the car was off back and forth real quick to see anything. Well it would make a clicking noise every time I turned it one way, left click, right click. It was like it wasn't solid and the joints were lose, so everytime I turned it, click!

Before I drop 250 on a flaming river shaft, would it be better to get a stock Ford shaft or get the flaming river one?

Also, the 'rag' looked to be in good condition, if it's the rubber thing on the shaft, then it's fine, well looked fine.

So, not rack, not tie rods, is it the knuckle shaft thing from fire wall to rack?