drive shaft problem

[low80c10]

ok here is the problem. i came across a 78 c10 longbed with no motor or trans. i had an 80 c10 shortbed. pulled the motor and trans out of the 80 and put it in the 78. i belive the trand is a 400 short tail cuz the yoke bolts in the trans. the problem is my driveshaft for the long bed is too short by 3-4 inches ......other than getting a driveshaft made what else could i do? and how much would it be to get one made


thanks in advance