Wouldn't these make the car sit low at the back but higher at the front?
If they're 16v ones, yes, but thats why I mentioned to ask the seller first.
Put an Anti Roll Bar on your car too, if you haven't got one. I've just put one on mine and the difference is really outstanding, it's now like a go kart going into corners because the front end does'nt drop down. It cost me £10 from the scrappy and is from a 5 door so its slightly thicker (firmer) than the 3 door ones. The best £10 Iv'e ever spent.