New to site, need some info.

[luvmybowtiz]

Hi guys, new to the site and i have to say I enjoy what I'm reading and seeing. I recently purchases a 69 c - 10 shortbed. It drives now but I'm gong to restore it. It has a 350 W/ a 4 -speed Saginaw I believe to be from a car. I'm going to use this truck to tow my 69 z 28 when finished. I would like to stay with the manual setup. My help needed is what type of manual were in them originally, and what is my chances of finding one. Or what is best to use for the towing part. Also has a 12 bolt with high gears. want to go lower and make posi. Are these 12 bolts the same as the cars, cause I have some, and what kind of ratio should I go with. Sorry so long, any help would be appreciated.
Thanks'
Mark