Thanks for the info, the rear suspension support was completely redone as u can see from all the welds, this will be the suspension tied to cage as it will have full coil overs, yes all B and C pillars tied to cageThe shock tower is attached fairly solidly to the frame rails. But I can't tell from those photos if there are bars running from the bottom of the rear hoop to the bottom of the middle hoop where it attaches to the floor. The rear rails don't attach to much, you really want to tie them in to your cage structure somehow, and from what I can see the cage as is doesn't stop the rear end of the car from bending up/down. Also, the rear wheel halves are really weak how they mount together. I would tie the c pillars into your cage too. Have you seen this?...