Anyone familiar with using Helicoils?

[Andy]

I stripped one of holes for the exhaust manifold. So I need to drill, tap and slide in a helicoil. Someone care to walk me through this? Maybe tricks or problems you ran into.

Also,

Can I take the car to the track with a missing manifold stud? I have 5/6 with the stripped one on the far side of the manifold.