I had two broken exhaust manifold bolts on my 14 Ram 5.7. I checked the manifold and it is warped, Does the manifold warp and then that is what breaks the bolts? Or are they cheap bolts and the manifold warps after the bolts break? Also why are there two different part numbers for the stud bolts that mounts the right side heat shield, They look the same length except the nut portion is slightly different. 2 look like 6510141AA and the other two look like 6509863AA