Dash speaker size?

[TDS-MN]

Hey All,

Thinking of putting a bit of a sound system in my truck, now that I've got my exhaust leak fixed, I feel I will be able to hear the music better. Starting from scratch using mostly components that I've had laying around the garage, I'm not looking to go crazy on the install.

Curious if anyone knows off the top of their head, the dash speaker sizes? I'm looking for the left and right ends of the dash, not the center speaker.

For now my plans are to put L and R speakers up there, and run the 4x10's in the rear cab corners. And I've got a small sub that I might be able to fit behind the seat. I might try and fab up something to utilize the center mount spot below the dash for a pair of tweeters or something, depending on how motivated I get. If I can get a speaker layout that I like, I hope to upgrade to a newer head unit eventually. Got a road trip coming up next week, would like to get thsi done over the weekend. Thanks!