It's another thing if you want to do everything yourself. I still don't see how they will try to rip you off if you call them and ask them for price of a specific sub or amp you are looking at. What you're basically telling me is that once they see you roll up in your 370Z, they will "forget" about the quote they gave you over the phone. IMHO, doesn't make any sense. But since you are going to do the install yourself, you don't have to worry about such things.
GL with the installation! Let us know how it goes and post pics
