transmision question on 1990 GMC 3500 Pickup

what transmission came stock in a 1990 gmc dually 4x4

1 answer 1 comment
3 speed, the turbo 400 was an option.
overdrive is a 700 R4
use your vin and call the dealer parts and they will tell you.

Roy
thanks roy your info was helpful. iwent and purchased a 700r for it though already i was told it will work fine. will plugs all work though? meaning electrical plugs.