So I started thinking/wondering..... I know when I switch over to 4x4 the front axle has one size of lug pattern "F" series my mini mod has a dually rear end running singles I was planning on keeping it but realized I will have to run adapters so it matches the front... (I don't want to do that) as the rear end is already wider than the front. Not having seen a dually van except ambo's ... did ford use the "F" series lug pattern on the ambos or did the dually rear end come from the factory with the "E" series lug pattern.