Could anyone give me some links to sites with decent nos systems i have 500$ to spend so im thinking nos.

I have a Cold Fusion System on my Focus here in the U.K. bought it off E-BAY in the states for summit like £200, which I think works out to something like $150??? the system is great, I even took everything appart and compared it with a Wizards of NOS system...to be honest, I reckon the Cold Fusion system is better on design etc. and the internals are made with stronger materials...Easy to install also