I plan on adding those two bolts but I'm not sure if they should be grade 8 bolts or not. The original bolts do not look like grade 8 bolts, I guess in the back of my mind I am wondering if grade 8's are to brittle? If they call for grade 8 I'll change them all out. Heck, maybe the original bolts should not have been reused? I know on certain vehicle applications they say not to reuse some bolts because of a 'stretch' of the bolt under load conditions. IDK
