TL;DR = It's not bad. 8.5/10
Like many of you, i don't fit in this little car as well as i would like, headroom wise. So seat bracket was needed. (And my drivers seat has duct tape holding the leather currently)
Read a lot of reviews on these seat brackets having never heard of them before, seen a lot of mixed replies on fitment. - Especially with the low production of the Alltrac/gt-four i was extra skeptical on the fitment on this.
Good news, was surprised how nice it fits and quality, it looks like very similar to a Sparco brand seat bracket I've owned.
It bolts right in perfect in Front. - Rear, i think the bolt holds need a ever so slightly hogging out for 100% fitment. They are super close maybe 1mm combined with Right and Left.
Annoyingly, you will need to use a wrench to install the bracket bolts in the rear as well.
Hopefully, combined with a Sparco Evo 2 this will resolve all height concerns. It probably
could be lower.