Is HT Motorsports still in business? If not who is making good suspension and brake upgrade parts?

The "Parent company" of Arraut/HT Motorsports is West Shore Fabricating in Nunica, MI...you may try giving them a call; 616-837-425

Also, West Coast Fieros makes suspension upgrades for Fieros, and also Fiero Guru.

See this thread about a potentially deadly issue from Arraut. If West Shore is a new company that is following the Held Motorsport protocol, you should be fine. If they are half-assing like Arraut to save a buck, run for the hills. The original pictures are gone from the OP but my images are still there.
https://www.fiero.nl/forum/Forum1/HTML/098195.html

Arraut and West Shore are one and the same.....

I guess the quality went to hell after the original owner of Held sold the business, looks like each name change and owner came with cutting corners on materials and little to no quality control. That is a shame. I bought the whole sport package, bump stop and 13" brakes set ups back in 2003 and everything bolted right in with no problems and everything is still working fine except for the front wheel bearing did need replaced because they failed due to being over torqued so their was one QC problem. The stuff I bought did require that I use the stock spindles and that now appears to have been a good thing. Looks like if I need to replace any bushings or other stuff it will have to be fabricated.

Somebody mentioned that they may have been taken over by the Fiero Factory.

I had not heard that, I would think if the Fiero Factory owned it the parts would still be quality

I don't think they have started production yet, but I have not looked in to it much.

Well if they did take over I hope they start making quality parts again, I also wonder if they will help any of the customers that got crappy parts from the previous owners?