i own a 1991 nissan 240sx T.C., F-B. just yesterday while i was bumping my system a bit loud my front speakers on the door panel gave up on me now it sounds like if i was flicking a piece of paper. in conclusion i would like to shop around for speakers but i would like to know the size so that i may know what to look for not what i want to buy.

Search dude....

but there 4X6

i run 5x7's =) all depends on how handy you are what you can run... some ppl do 6x9 LOL but mine are oval and amazing...

Yeah 4x6 is what fits in the stock panels. I was at a future shop like a week ago looking for some speakers too. I really like the sound of alpines. They were alright priced too. 127$ for a pair. Dont go pioneer though they sound like crapppp

I made a template and put 6.5's in my front doors. It's not that hard... But yeah, the stock size is 4X6.