Maybe try reposting in the detailing section. I have heard that you can repaint them but you have to add a plasticizer to the mix so that the paint won't peel off. If you are going to replace the parts, try looking in the junkyards for replacements that are in good shape.

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2001 Dodge Ram 2500 Cummins Turbo Diesel - 4x4, auto, 3.54 gears, long bed
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'92 300D 2.5 Turbodiesel - sold
'83 300D Turbodiesel - 4 speed manual/2.88 diff - sold
'87 300D Turbodiesel - sold
'82 300D Turbodiesel - sold