My 70 GT500 came with an aftermarket radio. It originally had an am/8 track. I found a D1ZA 19A242 am/8 track which I think should be correct. The car also came with a new radio bezel still in the bag. Here’s my problem: the radio opening in the bezel is 4”w x 2”h, but the part of the radio that should slide into that opening is 4.5”w x 2.75”h. What am I missing? Does the am/8 track require a different bezel?