I don't know about 01, but for my 98. 5 I took a 2gauge and a single pod, trimmed the single pod on the edge away from the gauge and fit it on the A-pillar. It's not as refined as I could've made it but I eventually will buy a 3gauge from DIS sometime. Oh, and I'm w/o tweeters.
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'98. 5 2500 QC ISB 4x4 SLT, Auto w/Transgo shiftkit, JRE 4" exhaust w/5"Tip, DD II's w/Module&Elbow, VA box, Rancho 9000's w/in cab adjust, Mag-Hytec trans&diff covers, Jacobs E-Brake w/BD autoloc, trans temp, boost & EGT gauges, 2Low Kit, Brite Box, Steel Horse Billet Grilles, AirBullDog hood induction system