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thunderjet · 12-07-2017, 03:21 PM

Have shortened 3, 3600 boxes to 3100 length. Take the 9 1/4" from behind the second stake post going forward. This leaves the front stake in its original location. You can shorten the running boards by cutting the straight area below the splash apron, the grooves will match up. Cut the splash apron in the middle, it will also work fine.

12-07-2017, 03:21 PM	#6
thunderjet Registered User Join Date: Aug 2011 Location: helena montana Posts: 37	Re: Converting a 3600 to 3100 Have shortened 3, 3600 boxes to 3100 length. Take the 9 1/4" from behind the second stake post going forward. This leaves the front stake in its original location. You can shorten the running boards by cutting the straight area below the splash apron, the grooves will match up. Cut the splash apron in the middle, it will also work fine.