Re Belts - If you look at how
Vanne has them mounted, this might work for you. I believe he is using eye bolts that are mounted in the rear bulk head. I also used a similar setup in my Toyota MR2. Keep in mind that most clubs will also require you to use a HANS device if you have a 4+ point harness; so bake that into your cost.
https://www.zpost.com/forums/showpos...&postcount=201
With regards to your brakes: Based on your last post, it seems like your using Hawk HPS street/track pads. Your description sounds like you have serious fade and are probably boiling your fluid. Definitely swap in a true track pad for your track days (like Hawk DTC60) and flush with any 600+ DOT4 Race Fluid and you should be good to go.