Driveshaft U joint question.

7260 to 7290 yes the 347 is the one you need.

Thank you Roy.
This is going to happen pretty fast once all the parts get here, and actually I'm putting the trans in ASAP behind the running 318 so I can get it all settled before the Mag goes in.

I thought about doing both at the same time, but I know myself and I would get in a hurry to get it all together.
I'll be better off having the trans settled and then unbolt it and swap blocks a little later, and the motor parts won't be here for a few more days anyway and it'll still need to be assembled.
I don't want to wait that long to drive the car again.
My pee pee might turn black and fall off if I have to wait weeks just to have it driving again. :D