The speakers in a 2007 Chevy crew cab are around six and three-quarters inches. However, if replacing the speakers, an adapter plate will be needed no matter what size is used.
what is the speaker sizes in my 93 chey truck
6.5"
they are 6 and a halfs.
No, that clutch is not adjustable.
6 1/2 front and back
6 x 9 front and back
For a 1998 Dodge Ram 1500 extended cab, there are two different sizes of speakers. The front speakers are 6x9 and the rear are 5-1/4.
6.5" for all four doors. Get a mounting harness for the speakers as well
A quad cab has four doors where an extended cab may have just two doors or two full doors and two smaller, reverse doors. A quad cab is basically a crew cab, though Dodge has a quad cab and a crew cab. The Dodge crew cab is a bit more spacious on the inside. If you have people in the back seat of a Dodge, the extended cab will have the least space for them, then the quad cab and the crew cab the most.
Assuming it is Club Cab, you must first remove the rear seating as well as panels to access them. They are in the rear wall of the truck beneath the panels. I believe this holds true for Crew Cab and Standard Cab.
5 1/4 in front doors 5 x 7 behind seat