i wanted to keep my OEM radio but i got an awesome deal on a indash dvd/cd/radio, flip out 7" touchscreen. now the question is, the OEM radio is huge but the new radio is the same as a regular radion. what do i buy to fill in that hole? isnt there a black insert i can purchase? where would i get one and how much?

any inetereted in installing it for me. i dont know shit about installing a radio.