Hey guys could really use some advice. My daughters car 99 Sentra 1.6 Ltre GXE LE had the cam timing chain jump. When I pulled the head and low and behold six broken valves. I have seen a lot of bent valves in my day but none ever broke. Any way the head is shot. My questions are do I need to replace the head bolts on this engine when reassembling assuming they look great? Anybody know where to source up a refurbed OM6 Head? The last unrelated question is she needs ball joints. I saw a couple on Ebay that were not the whole control arm that supposedly fits the 99 Sentra. I thought that the arm needs to be replaced is that correct or can you you do just the ball joints? Thanks for any help in advance.