Another difference between the LD 3/4 and the HD 3/4 is the transmissions..both auto and manual. With the LD 3/4 you get the lighter duty 4L60-E automatic, or the light duty 5 speed..but i believe you can special order the HD 5 speed with bulldog low in the LD 3/4. In the HD 3/4 you get the 4L80-E 4 spd auto which is the heavy duty automatic, or the heavy duty 5 speed with bulldog low. You automatically get either of these when you specify which type of tranny (auto or manual) when you order an HD 3/4.
One thing I forgot is..you could get a diesel in that model year in a 1/2 ton, 3/4, and 1ton. All trannys were HD autos or HD manuals with the diesel..even in the 1/2 ton.
Tim
[Edited by pottstim on 09-28-2000 at 05:23 AM]