Any of you guys have had a driveshaft made up. I need the name of a shop that does datsun driveshafts.

The good shops can find the specs or just take measurements. And there are aftermarket propeller shafts out there. Nissan calls the center longitudinal shaft propeller and the two "half-shafts" drive.

You need to be aware of one big problem with 1975 though - Nissan used a unique flange bolt pattern on the differental. 76, 77, and 78 won't work on a 75.

Motorsport Auto (TheZStore) knows, on their Replacement page. But not on their Performance page. Oops.

https://www.thezstore.com/category/935/replacement-driveshafts

Don't buy a Performance shaft from MSA.

https://www.thezstore.com/category/827/performance-driveshafts

Do the half shafts in 1975 have replaceable ujoints or are they stakes like the driveshaft?

Half shafts across all years are the same replaceable snap ring retained ujoints.

21 hours ago, daveone23 said:

Do the half shafts in 1975 have replaceable ujoints or are they stakes like the driveshaft?

Don't assume that new aftermarket u-joints will be better/tighter than used Nissan joints. Nissan's specification is very precise. Each joint came with clips of varying thickness so that play could be adjusted and set correctly. New aftermarket joints come with one clip thickness for all. I replaced a set on my car and they didn't seem any better. I actually removed them all and returned them. They were Precision from O'Reilly's. The Nissan joints are greaseable and are often just fine after a shot of new grease.