Found on the net

[Bob_Koch]

Can you tell that I'm at work (but not working). An interesting '51. Never seen the diamond plate on the outside of the bed before.

http://www.cardomain.com/ride/2167645

[Reg Evans]

Looks like a fifty three to me.

[D25_Steve]

Personally, I don't think the diamondplate looks good on the outside of the bed.

[48Dodger]

hummm...dinnerplate...homeplate...licenseplate...flatplate...hotplate...skidplate...hummm.....diamondplate! Yea, he got it right. And I'm sure he's happy with it, he took a picture.lol

48D

[Reg Evans]

He was probably tying to cover up dented bed sides.