What about these components?
Engine Compartment Brace
Mandrel Bent Lower Radiator Support / Front Frame Rail Connector
Inner Fender Braces
Does anyone other than XV make/sell them?
Maybe I should've taken measurements of mine before I installed them. I could've sold them to you cheaper lol. I got all my stuff from them (inner fender braces, lower rad support, sub frame connectors). Everything I got from them worked great, except the sub frame connectors. Those things were way off and I had to do a lot of work to them to make them fit, then I had to do even more work to them because they weren't long enough. Also if you get their rad support, DON'T CUT OUT THE SUPPORT THAT IS THERE NOW!!! XV suggests you do it, but you can get it in there stock, and that leaves you the option of always removing it.
I don't know of anyone else that makes those parts but honestly I never looked, I bought XV and after their crappy customer service wished I had looked elsewhere. As for the engine compartment brace I am going to try and make my own, it shouldn't be too hard.