As far as holding the mount to the head, use the same 2 bolts you took off on the old mount.
Also, you don'ts just swap the coil packs over. You have to swap that enitre ignition control module.
On the old one, just underneath the coil packs, you should have had to unbolt and unplug a connector. It was kind of a wide, short connector with a bolt in the middle.
The piece that that connector bolted into is what you need to swap over as well. The coil packs will sit on top of that.