two piece drive shaft to one piece cust. aluminum

[hvychve]

I got this 72 3/4 ton and dont know when to quit playing. would like to get rid of the two piece driveshaft. seen many later model fords with the giant/thick aluminum shaft. its so thick due to the fact its long . I would like to think I would be better off with a one piece unit. eliminate the center support and slip yoke in the center. have a custom aluminum unit made with proper slip yoke....sure its going to be costly but I think it may improve ride and drive train vibration.... any input at all on this or has anyone toyed with this????