OD vs. Non-OD drive shaft

["Terry L. Thompson" <tlt@digex.net>]

I have a '76 Non-OD spit and am accumulating parts to do a swap to a
rebuilt J-type OD trans. 
Is there a difference between the drive-shafts? 

Also, anyone that's done the swap before, I'd appreciate any tips or
suggestions that might
expedite or reduce the cursing usually caused by a "modification" like this.
I have a borg and beck clutch kit on order and the clutch cylinders are
both less than 7 mos.
old.

-Terry L. Thompson
'76 Spit 1500
Maryland