They were all oem bolts but I found out two bolts on the right side ( the ones that broke) were OEM stainless. I found out when I ordered new bolts and there was two different part numbers for that side. No idea why only those two. The left side were all regular Oem steel but three broke on that side also.

I was asking about the manifold because the mopar dealer said the manifolds were on nationwide back order due to a new part number being released so I was hoping it was a change in the manifold design in some way that would help the issue.