Well, I finally got my f150 to give me a problem, seems it ate its first driveshaft.
How much would a aluminum one cost me? I got a Shortwheel base Extended cab with the Stepside bed on it. Heres some pics of the driveshaft..Sorry I didnt get the whole thing.

 

Wow, I never saw one get ate up like that. I would try a salvage yard first.

 

Yeah I get real good deals from a few junkyards around here, but I never can get ahold of the guy I deal with..He's always running around out in the junkyard.
From the looks of that Driveshaft, It's killed out..I guess when my F150 gets hungry it'll eat anything. lol.