2012 suburban disappointment

[swathdiver]

I noticed about 2 weeks ago that the driver's side rear-most bolt head on mine is gone. That's the only one currently. I'm tempted to buy new ARP manifold bolts/studs and proactively swap them all out, but wonder how many will break when removing them.

Going to do my driver's side when it cools down and replace the studs and nuts on both manifolds, Fel-Pro ES75120 and ES75106. If going ARP, Mark told me to use 134-1102s.