if you are going to pull the door panels off, be carefull not to break the plastic door clips that hold the door panel on. when i replaced my front speakers i broke about 7 of them. if my memory serves, there are 3 screws also. you can get the clips at the dealer for about $2 a piece. i installed 6 3/4" speakers in my jeep and they just fit, a friend of mine used 6.5" in his and he had to do some creative rigging to get them to fit. maybe it was just the brand he used. What kind of speakers did you get?
'98 Jeep Grand Cherokee 5.9 Limited.
Mods: K&N FIPK, Viper Alarm, Air horns, Kolak Ignition Upgrade, Edelbrock IAS, Tint to match back.
Stereo: Pioneer Premier DEH-P840MP head unit, Kicker 12" XPL sub, Infinity kappa 6 3/4 in front, infinity reference 5 1/2 in back on stock infinity amp.