I have a 2005 CV8Z Monaro (U.S. GTO) and am about to purchase a set of SR6500 splits for the front stage. If i use the standard speaker positions i.e. woofer in door and tweeter on dash am i going to suffer with frequency separation issues? Do i need to mount the tweets in the kicks? I am reluctant to do this as my car is a limited edition version and don't want to modify panels if possible. Any thoughts?