What he said there. Think unconventional, surplus, anything but retail material. It would be possible to make a dam out of a retread cap from alongside the highway, if you found a really nice one
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2007 Dodge Ram 3500 SRW 4x4 with 6MT
2003 TDI Beetle
2002 TDI Beetle
currently parked - 1996 Dodge 2500 Cummins Turbodiesel
Custom cab, auto, 3.55 gears