1990 Accord EX Front speakers

You MIGHT be able to squeeze a 5.25 into the space with a little work. You could also check out www.airesearch.com for a set of Q-Form kicks. They offer one for your car by the way. Simple to install and better imaging and staging than your stock locations.
Hope that helps you out some.

6.5 inchers............

I have cerwin vegas 6.5 inchers in my fronts. They seem to fit fine for me with the exception I had to saw off the back speaker bracket cause the magnetic was to big, but other than it fit fine and I like it. At first I did know how to do this so what I did I just the speaker in without the brackets and threw those away 2 years ago. My window would row down and hit the magnet part partially. then I found out you can saw off the bracket so I had to buy a OEM part for 2 bucks a pice and did and I'm glad cause I hated going through drive thru and my window would only row down 80% of the way

what i have on my 93 accord is probably what will work with a 90 accord....... I bought Rockford Fosgate FNP-2514 a 5.25 mid with a separate tweeder...... i had to modify to fit it in.... but it was easy, it took me an hour and half for the oneside and the other side took me 10 min.... I can tell you more about it .... just post up

Thanks guys for your help

I'm going to take a look at the speaker placement myself. If anyone thinks that 6.5" will be a problem, let me know. Fry's has the Polk 6.5" DX6 for only $60 at the stores. I'm going to buy a couple sets for my other car too. As for the rears, I can finally put an affordable, good sounding set of 6X9's.