First post - '65 Dart A833 swap questions - slip yoke, U joint, shifter location

Hello from Monroe, CT!

This is my first post. I've had probably 20+ cars over the last 25 years, but I recently picked up a '65 Dart 270 2dr with a 225 slant 6 and a 3 on the tree. It's my first Dart, save for the '70 I had when I was in high school.

The first upgrade I want to do is replace the 3spd with an A833 OD. I already have the bellhousing/transmission/shifter, but from what I've learned so far, I'm going to have to have a custom driveshaft made up. The original transmission used a ball and trunion front U joint, and the later transmission I have uses the more conventional slip joint.

Can anyone tell me what series the rear U joint is, ie. 1310, 1350, etc? I haven't been able to find a clear answer yet.

The output shaft on the A833 has 26 splines. Is the slip yoke the same as a 904, or is there something different about it?

Assuming the slip yoke is the same as a 904, what series U joint would that slip yoke use?

I'm just trying to figure out the which U joint I'm going to have to have in the front vs. the rear, and if I'll need a conversion U joint or if I'll have to have different U joints in the front and rear.

Thank you in advance for any help.

Chris
Monroe, CT