1987 Grand National Driveshaft Length

[82oldsmobile]

What is the length of a stock 1987 Grand National driveshaft? I have a 1982 Cutlass with a turbo 350 and 8.5 10-bolt out of a 1987 Grand National and need to know what driveshaft length to order. I was told the 200 transmissions that came in the Grand National are the same length as the turbo 350 so these two combos should share a common driveshaft length. I'm 35 minutes away from the shop where my car currently is so if anyone could offer me some advice on driveshaft length and save me a trip I would appreciate it.

 

[mikestertwo]

Mine measures between 51 3/8 and 51 1/2 inches center to center on the U-joints.