Speaker Question :)

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Hey everyone,

I've done quite a bit of research on the stock speaker size considering how many threads there are on this, but I am getting conflicting results in my searches. I have a 2000 Jeep Cherokee 2 door sport. I have the double din with the CD player, but I don't see any infiniti logos. I have the rear sound bar across the ceiling. I can't figure out what size speaker to buy for the front doors, does anyone have a solid answer for this? I believe the rears are 5 1/4? Any help on the front size would be greatly appreciated, thanks!