Stock speakers should be 4x6's
3-1/2"
the size of the speakers are 6.5" round
It has 4x6" speakers.
6.5" front and rear door speakers
4X10's
The stock speakers in a 1994 Chevrolet Corvette coupe measure 4 inches by 6 inches in the kick panel. The pillar speakers measure 5 1/4 inches.
6.5S 6.5S
All the speakers in a 1991 Chevy Silverado should be 4x6 if they are stock.
6.5" in the doors. Standard tweeter size (1.25" I think).
6 1/2 front and rear
Mine came stock with 235/70 r16