Bolts in bulk? Anyone done this? What sizes?

The other problem with getting a car for bolts is are they metric or SAE. The assholes that said we should go metric made car Mfgrs. go metric and now we have SAE and metric thanks to people that don't know ****. Chrysler used 10mm bolts on first 2.2 engines and found out they had head gasket problems and had to go to 11mm bolts. They actually sold a kit to help you get 11mm bolts in your engine. So we are in a no win situation as usual thanks to the Govt..