SM465 to Saginaw 4 speed swap

[imaguywithemail]

So the shifter in my SM465 went out in my 1970 c10 stepside, so i decided to go with a saginaw 4 speed i had lying around. the swap's been going great so far, except for the driveshaft part. From what I've measured I need a 59" driveshaft from yoke to yoke. I'd like to do this without having to cut anything out. Good news is I'm good friends with the owners of the local junkyard so I can get stuff without a hassle. What cars or trucks have a driveshaft that would fit the bill? I really need to get this thing up and running soon. Thanks for the help!