DUKW info

[maker1966]

Could anyone guide me on the best place to get good quality drawings for a DUKW that are good enough too up scale to 1/6th without too many errors. Would it be feasible to scale up some 1/35 drawings from kit and be good enough ? I have the ability to measure a mostly complete one locally, although the condition is poor for most original equipment.
Just an added note, could any answers also include pay for place too..