I saw that eBay seller.  But do these pins give any greater functionally than the Dorman pins that are 4 times less money?

I've not used either so I really can't say for sure, but my guess would be probably not. The sizing might be a little different.

I wish I could remember where I bought mine, but the kit in the pic looks like what I bought.  They really worked good and definitely no more door sag.

Maybe a bit late to the party but I’ll be using this thread to rebuild my 1977 280z door hinges as the passenger side in particular sages so much that the door won’t even close anymore. Any tips on removing and installing the doors on a 280z? The tricky bit is that they are bolted from the outside and I don’t want to remove the entire front end.