Hi guys, I am bringing my 92 gt convertible back to a stock interior. Previous owner had an aftermarkert radio head unit with a detachable face....and lost the face. I am looking at the 87-92 mustang radios on ebay. Some of them have an empty cubby underneath and some of them are twice the size and have equalizers and such. How do I know which one came stock? I have car with 6 speakers as opposed to 4. It has almost all the options leather power everything. Is there some way to tell by the vin? If I cant find out I think Ill go with the smaller unit. I like having the space underneath to throw my wallet/phone into.