Search for a driveshaft

[traacer]

So I learned what happens when one of your rear U joints on the driveshaft snap at highway speeds...needless to say i'm looking for a new rear driveshaft but not sure the length from weld to weld, overall it's 50" flange to flange. I have the Regular cab w/long bed 114" wheelbase. The only driveshafts i can find are for short bed or extend cab short bed. Any help would be appreciated.