I was replacing my opti, and I broke the bottom arm. The arm i'm talking about is what the 3 bolts go into to hold it on. I could have sworn it was completely on, but obviously not. Anyway, I took it back out and got it in right. It feels like it's on there really good with just the 2 top bolts, but what to you all think. Will it hold? If not, I'm going to try to take off the plate from the old opti and use it.

 

I would not leave it on there with only two bolts holding it on. It will be a bit of a task to swap out the housing. Perhaps JB weld might be a good option?

 

I broke mine on my old Z, used JB weld, worked great, just be careful to go easy when you tighten the bolt to not break it again...