if i had the extra cash i would but i would not charge extra would want just what i paid. i like to help my fellow hummer enthusiasts. i am probally gona go buy one on saturday. i called and asked if they had in stock and they do and i also double checked the price with the model. and it is $550 on sale he said its a great double din unit and the garmin gps works great. so i look forward to the install cause i love to work on my hummer and i try to do all the stuff myself but sometimes need a pro.