Some of the 308 heads I have to check for cracks have some broken exhaust manifold studs stuck in them. Bought me some new tools! Some self-cantering (Ha! Yeah I'm going for more HORSE power, but the car ain't gonna canter down the road) Self-centering drill bits to drill out those broken studs and not destroy the threads. I guess I coulda put this in the Shop Tools section. Also, the wrench socket to remove the 5/16 square NPT plugs for the oil gallery...