I plan on replacing my struts soon, the front ones are making a distinct noise from the assembly. Should I use the current springs (55,000 miles) or should I buy new ones. I am a college student on a budget (like so many others) so the GMPP/Koni package is out of the question. Also, if I put the GMPP springs in stock struts, how long does it take for the bouncing effect of lowering springs to get bad.