X-Brace with upper and lower Struts fitment

[M!chael]

Basically,got my tegiwa x-brace with upper and lower struts,maybe im being a dumb-ass but i know where it bolts in at the bottom around the suspension...but where does it go at the top...the seatbelt anchorage? If so how does it attach on,would i need a bracket? as i havent been supplied with one?

Tbh im not even sure if ive built the brace properly anyway,as it seems like i am missing 2 nuts for the build...

any help is good help,thanks!