Exhaust Manifold hardware

So how screwed am I? I bought a set of mainfolds to break-in my cam on a run stand. I don't want to ruin the ceramic coating I have on my headers and they won't fit with the truck bellhousing on the stand even with a mini starter. So the header bolts I have won't work obviously and I forgot to order hardware for the manifolds for this weekend.

Is there anyway to mount these things just long enough to check for leaks? Can I just buy some Home Depot bolts the right length? I have the studs needed for first and last holes already, just need to find a solution that'll last 15-20 minutes and let me break in my motor.
absolutely - I have run to a local hardware store many many times for assorted nuts and bolts when I've been in a pinch.. go get it done!