When Clinton visited Hawaii the presidential limo could only do 30 mph up the Pali Highway. I can climb that higway at 60 mph at a GCVW of 15500 lbs. Could do more but EGTs would go over 1300. (Need to get that 16cm2 housing on there). That limo needs a Cummins for sure but the smoke and noise would not seem too "presidential. "
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1996 3500 Clubcab SLT, auto, 4. 10 limited-slip, TST #5, 370s, AFC spring kit, Psychotty, Dunrite converter, Trans-Go, Walker 21471, DiPricol EGT, boost & trans temp. gauges, 9 ft. aluminum flatbed and tool boxes with Venco dump. Custom front bumper, Hadley air horn, PowerVision mirrors.