Everyone has to make decisions about "worth it". OE seals on 3 SDs that I own (84, 85 & 85 parts car) all have something wrong. I've pulled several from yards and also ran into something wrong that prevented me from using them. There are a couple of weak spots where sections of the rubber separate. I've removed others and gotten to a section where the PO glued them on making intact removal in the jard without possible heat difficult.

As far as the China quality issue goes I have a close family member who imports aftermarket crash parts from China and Taiwan. He says that you can get any level of quality that you're willing to pay for. He buys some fenders landed for less than it costs to ship a single fender across the US. Adding options to a part is inexpensive. For example going from power to power heated to power heated with memory a mirror is only a few dollars if that much for each option.

I have a friend who used to work for Meyle. I asked whether he designed the parts. Answer: "No I design the machine that makes the parts." His take that once a part is designed and set up, each individual part's manufacturing cost is very small. They are of course priced at what the market will bear.

Until labor costs overseas rise those jobs will be staying where they are. We don't want to work that hard for those wages.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.