I going to be buying 2 12's and a rockford fosgate amp that my freind is selling from his C220. Im getting a good deal on them and I already have a Pioneer deck inside my car aswell I added 6x9's last yr to the back shelf.

My biggest concern now is how to setup this thing in the car? If somebody could give a step-by-step process how to do something like this or is it better to take it to a shop but how much $$?

Thanks alot.

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99 C43
98 S420
99 C230K
01 C240