We supply all the hardware to mount this bracket- bolts, nuts, washers, Adel clamps, standoff.
Like Ashley said, these coils are engine mounted in the OEM applications so are designed to see a lot of heat and vibration. The underhood temps on some cars with massive cast iron manifolds and turbochargers releasing a lot of that stored heat on shutdown is probably higher than our aircraft see in many cases.
We've been selling these coil packs on our 6 cylinder CPIs and EM-5 systems for 3 years now. Zero failures to my knowledge. We've been selling the 4 cylinder ones since 2008 (integrated drivers), hundreds to date and again zero failures.
This coil hardware is much more reliable IMO than that used by some of the other EI manufacturers where we've seen multiple failures reported here on VAF and elsewhere- heat related and vibration failures of their exposed terminal connections are common. The connectors on these coils shown are really bulletproof.