I lied, they were studs, but they were not long enough to torque down tight through the manifold and wastegate, this was the only Fmax flaw I encountered... I then used bolts.. which held for about a day.. I guess I'll look for studs at the autoparts store.
brian, screw auto parts stores. look in the yellow pages under fasteners.
take an example with you to the specialty nuts&bolts store and tell them what they will be used for. the guy at the counter should be able to set you up.