Looked at similar unit posted above, Had bedliner on roof, thought it was strange looked inside saw water stains on headliner got up on top realized it was fiberglass not steel roof over cab and was cracked allowg water in.Wonder why manufacturer went that route rather than steel roof.
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2002 SMB RB15 7.3PSD
Contempo top 2WD sold
2008 Ram CTD
2011 Ford Raptor
2002 Casita