833 OD Trans

is this cast iron or aluminum case .... YES

and also are the holes factory drilled and tapped on the rear shifter mount ? NO

have you looked inside at all? Yes it's clean

does it turn freely Yes


and is it a 30 spline output shaft. Yes

and does it have the 3.09 first gear ?
Hmm not sure but I think the trucks are 3:09

http://www.slantsix.org/articles/4-speeds/ODA833fourspeed1.htm Will help yeah.