Posted by Mark D. [173.245.54.40] on Sunday, June 12, 2016 at 23:33:55 :
In Reply to: Re: 1971 W100 factory 383 4 Speed posted by Fred Z [162.158.213.114] on Tuesday, June 07, 2016 at 22:28:06 :
W is the designation for 4x4, D is 4x2.
The 383 was optional in all series D&W's starting in 1967.