Is it safe to replace 1 shock on a high mileage car?

[Topless]

Both shocks and get her on a frame rig to make sure she lines up within Porsche specs. I would want a Porsche shop making the repair decisions and doing the work, not some ins. guy who is simply minimizing financial outlay.

[RBatsch]

Unfortunately it is the Porsche dealer/shop that is telling me the car doesn't need to go on a jig or be checked with a laser for chassis straightness. They visually inspected and don't feel the impact was powerful enough. They do however say that once they do an alignment and things are off, they may have to. I'm worried that they'll only do this if there isn't enough adjustment to get the car aligned. Not sure how I can ensure this other than hanging out at the shop until they complete the alignment.

As for the second shock, I've contacted Bilstein to see what they say.