I'm on a PC now so easier to type. You will likely need to cut out the plastic behind the radio to get anything big in there. You will also need the 95/96 radio bracket, the plastic piece which screws into the dash to hold the radio. They are different between 94 and 95/96. I found one in a junkyard.
I was able to cut out my dash to make a double DIN fit, but I have a 96 dash waiting to be cleaned up and painted.
Good luck!