I didn't use the Harbor Freight Rivet gun. Instead, I rented one that was very close to the specks of the 20K bar/5Klbs pulling recommendation. I put in 15 rivets to start and some went in nicely, but some didn't do a great job of closing the tiny gaps between the car wall and plate and didn't finish tight. Hence, I wasn't convinced this was the way to go and I wanted a good peace of mind that this plate was secure.

So, I had to make a bunch of calls before I could finally find a welder who would come to my house and weld it on. Going forward, I would recommend this to anyone going through this process. I was shocked at how hard it was to find this welder.

Pabster