I have purchased the JC Whitney set. The only issue was the front floor mounted section, they were not long enough. Fortunately the OEM was still good. The rear seat also had an issue, as the mounting was different than the OEM. The end result is the rear seats are useless unless you have less than a 34 inch waste. Seat belt extensions have solved this issue. Be certain to read the pros and cons from the catalogs, I posted the issues with both. While neither was life threatening, both required several trips to the hardware store. As for your torx, just replace them. I used stainless with a shoulder. The threads are different than the other bolts.
I wasn't interested in the strength rating as it is just a pavement princess. If you are concerned, hopefully someone will post the specs.