Alignment Question

How old are the tubular UCA's? If the car doesn't have a ton of miles since they were installed I would suspect that the upper ball joints and UCA bushings are probably ok. I mean, it's worth checking but those parts should last a long time. Of course if you don't know the history on them it may be worth the piece of mind to you to replace them anyway.
I just talked to the guy that I got the car from and he said he just replaced both upper and lower when he switched over to the larger bolt pattern disk brakes, so it should have new ones already. The only thing he is not sure about is the manufacturing company he got the part from, meaning if we had to replace the ball joint with a standard larger Mogg ball joint will fit it like the normal one that screws in. hope that made sense.