K, the fronts are DEFINITELY 5.25s on my 89 LX. I had put some DUAL 6.5s in, and they sorta fit, but then I got a deal on some PYLE 6.5s, which are actually really 6.5", and they don't fit AT ALL.
PS: WHY THE FUCK ARE SPEAKER SIZES NOT FUCKING STANDARD!!!!??!?!?!?! ARgh. I hate modifiying all this crap and trying to get it to fit 'really nice'. ARGH>!