3 speed to borg warner t10 swap anybody done this ??

[truckpower429]

i have a 68 GMC 1/2 ton with a 350 and a 3 speed tranny and a buddy of mine suggested to me that i should swap it out for a borg warner T10 or a muncie 4 speed out of a car. i was wondering if anybody has done this swap and what all is involved with this .. i was told that it will bolt up to the same bell housing and use the same clutch assembly but i need to know if the tail shafts are the same so i could use the same drive shaft.. any help will be appreciated.. thanks Willie