I've talked to them as well, and they said it would not fit the driver side.
QuadVan installed the regular long-headers on all the Chinooks they did, but modified the driver side as well. John says the JBA shorty headers fit great on a 4x4, but does require shimming one of the motor mounts slightly. I decided against the JBAs because they have a thinner flange (3/8") than the Banks (1/2") and for how much I'm towing, I was skeptical they would hold up.
I haven't modified my long-tube header yet. I might try a 2-piece front driveline first. I think it'll fit as-is this way, along with changing the crossover pipe. Chopping and re-welding the headers is the backup plan.
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2000 E450 dually V10 wagon
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