The swaybar mount is for a scx10.3, I got it on Ebay. It’s made for a reef’s swaybar but i modified it to fit my project. I broke that, too, lol. I reached out to the guy and he is making another one with dimensions that will just bolt in.
I snapped a 3mm tap off in a STRC rear bumper mount the other day, for my SCX10ii. I was drilling and tapping the mount for a sway bar bracket and snap! It’s done, I ordered another one.