You would have to change the axles to get a SRW. I put a regular 8 ft dually bed on my 550 with some spacers from Utility body werks. there are several upfitters that make the pieces just few that are willing to sell them. (the spacers are neccesary because the 550 has a 4 in longer wheel base) pics in my gallery if you want to see the procces. Barney

 

well there ya go, didn't know all the particulars but I know I've seen a few of them.


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