Put the saw down and step away from the car. Are you in a great hurry to upgrade you system or are you willing to spend a few weekends learning to fabricate with fiberglass? There are several websites that will teach you to work with fiberglass, believe me it is not hard but it does take a little practice. I had the same problem with the e-brake pedal on a 1978 MB 280 a few years ago. I had a friend cut it and weld in an extension that moved it over 3 inches and angle it up. That was rather extreme but it worked great. Then I put Infinity 5.25 seperates in custom made kick panels. I put Oz 8" subs in the front doors in custom made door panels but I had to cut the door panels to do it. The only thing I regret was cutting the doors for the subs. If you are interested in 'glassing I would be glad to point out the better sites for you to check out.