Hi Jerry, There is a type of seperator that works particularly well and should work on your upper ball joint, too. It's sort of like a clamshell, all one piece with a slot in one end and a large bolt in the other. Just slip it over the joint, tighten the bolt and it will pop right off. I recommend leaving the nut partly on to help keep the tool centered and keep from damaging the threads. Whacking with a hammer is optional. A tap is about all it ever takes. An alternative with a stubborn tie rod is to tighten the tool up good, go get a beer out of the fridge and likely the joint will pop before you've finished the beer.
I used it this week on a TR4, which is virtually identical to your car in these areas, and had both the tie rod and the ball joint free in just a few minutes and I know these had not been touched in at least 16 years, probably a lot longer.
I've got a drawer full of other pullers and seperators, including a few "pickle forks". But, any time it will fit, this is the tool I use. Problem is, I forget where I got it. I think it was one of the big three TR parts suppliers here in the U.S.: Victoria British, Roadster Factory or Moss Motors. So, I probably paid half again what it can be bought for elsewhere if you can find it.