Dave, with all of your 6.0 and Yeti issues it might be time to step up to a Toyota van with the built in ice maker....and if you look hard enough you might score the 4x4 model and not even need to get it converted.
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2006 Ford E-350 V10 Agile 4x4 SMB EB50
2000 Ford E-350 7.3L Quigley 4x4 hard top with custom interior by Xtreme Fab - Sold