wow... well... once u drove that car off the lot it was worth about 3 or 4 GRAND less... so, unless those 2 packages are worth that much, u will be losing alot of money... the greatest single depreciation in a car is the second u sit in it and drive it off the lot under your name, the next greatest depreciation, is when there is negative vehicle to vehcile contact... so, find out the price of those 2 packages and compare numbers... it might be worth it... but i highly doubt it... would probably be bette for u to go back in fork over an extra grand and have them install it... ur car will be worth more as it will have those packages... and talk to the person u bought the car from, maybe he/she can give u a deal on it...