http://www.chevyduty.com

has 47-87 style seatbelts, in several different colors for 19.95 each.

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http://www.gspp.com/

several seatbelts, 19.95 each

fancy chrome 39.95 buckle


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http://www.brotherstrucks.com

seat belts, shoulder belts 

lap seat belt 17.95 / 3 pt shoudler belt $130 each or 230 for 2 and all hardware

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