Durango Mods

I own a 98 Durango. Had the problem with shutting down on the highway. Happened bout a month ago an hasnt since. I pushed all fuses and electrical connections i could find to make sure all conns. were tight. jus gonna wait an see. As fer mods, i put on a cherry bomb glasspack and a K&N filter. I am gonna go fer the K&N intake instead of just the high flow filter. shouldda done that to begin with. The cherry bomb glasspack is only 30 bucks, and the sound is deep an loud. As fer gas mileage i just dont know. I do know that the growl on start-up and the snarl on accelerating and the rumble when cruising brings a smile to my face everyday. If i had the bucks to spend i would go for a powerdyne supercharger. Anybody out there running a supercharger?