The front and front door speakers on the 1993 Jeep Grand Cherokee are 6-3/4 inches. The rear and back door speakers are also 6-3/4 inches.
no.
If the grand cherokee is a 93-98 yes... otherwise, no you cannot. 99+ Grand cherokee "rims" or wheels are a 5x5 (5x127 mm) bolt pattern while the cherokee has 5x4.5 you need not consider the size...15" 16" 17" will generally fit on a grand cherokee. It's the bolt pattern you need to pay attention to.
infinty sound system! If you want to improve sound go see a speacialist and get a new system. If you want to fix your Jeep speakers, google - Jeep Speakers - and go shopping.
it should, 93 - 98 are the same
yes it will, start swapping!
Yes 93 to 95 are the same
Any door from a 93-98 Grand Cherokee should fit
Look on the left side of a 93 Grand Cherokee. It will be the front one.
Yes
No.
I have an 89 Jeep Cherokee Laredo, and both my doors, and back panel have 5.25" speakers... I'm not sure if the 93 Cherokee is the same, but I hope I help. My 92 Cherokee also has 5.25" speakers in both doors and in the rear hatch...however you can fit 6.5" speakers in the door with little or no modifications. Also you can fit 6.5" speakers in the rear hatch with a little cutting to the fiberglass.
Please, rephrase the question. You say you have a 1989 Jeep Grand Cherokee, but the Grand Cherokee did not come out till late 92, but was considered a 93 model. If what you really have is a 1989 Cherokee, we need to know the motor size. The rest we can look up and give you the best answer possible.