What would be the best cold air intake system to buy at a reasonable price for my 1990 Cadillac Allante?

I want something that will work on the road, but increase its horsepower. I have a 8 cylinder 4.5 liter fuel injected engine in my 1990 cadillac allante.|||K%26amp;N full intake the drop ins are nice to... than get a high flow exhaust flowmaster sounds nice the combo should get you at most 25hp|||Even the best will only add about 5hp. If you want more power,look at a cam change, or headers and aftermarket exhaust.