How do I measure the Rear?

[sixpack_sid]

I have a 68 Charger that I bought as a shell. I am putting in  a 440 eng & tranny from a 77 New Yorker. I am looking for a driveshaft to fit. The yolk at the U-joint is 3 & 7/8 from outside to outside. My question is how do I tell what rear I have?
I want to be sure I buy the right drive shaft.
Thanks,
Sid

[FLG]

That any help?

[FLG]

Just saw your other thread, you just need to know what kind of U-Joint you need correct?

7260 Inside span of 2 1/8

7290 Inside span of 2 5/8

[sixpack_sid]

That any help?

That answers my question-I have the 8 & 3/4.
Thank you!

[Chatt69chgr]

And I think your driveshaft length will be 52.07 inches from centerline of axle flange to centerline of slip joint flange.  (I've seen the figure 52-1/4 inches on other posts).  Either would be OK.

[sixpack_sid]

And I think your driveshaft length will be 52.07 inches from centerline of axle flange to centerline of slip joint flange.  (I've seen the figure 52-1/4 inches on other posts).  Either would be OK.

Thanks! That was another question on my mind!

[doctor4766]

That any help?

That answers my question-I have the 8 & 3/4.
Thank you!

Mine looks like the 8 3/4 in that pic but there was a tag attached that said 8 1/4.
Doesn't look anything like that 8 1/4 casing. What gives?