I'll tell you what....I'll NEVER try to do another speaker install on my 93 Classic!! I bought the car with a blown set of front speakers(hey, what do you want for cheap?), so I went to Crutchfield(among other places) to see a fitment guide for front and rear fill. Holy S**t!! Nissan uses some sort of weird mounting plate to house the speakers in(which BTW are tiny-like 3"x5" or something). Sooo....The 5 1/4's I bought needed some "coaxing" to get them to fit inside of what was basically a HUGE hole in the door after the stockers were removed. I suppose I should take it apart again in the spring and Dynamat the open area, but I'm not spending another 5 hours in 10 degree weather to do that....