10.2 : 1 compression 360 at sea level. Options?

Just an update, 93 octane and a bottle of octane booster seems to be keeping any detonation at bay. I'm also seeing that Austin ranges from 500ft to 900ft of altitude (10.29 at 900ft is comparable to 10:1 at see level), which could be helping as well. I'm currently at 31 degrees total mechanical advance and running cooler plugs (2 steps down from stock) which might actually be too cold, but we'll see. Car runs at about 180 degrees.

The car feels quite a bit quicker down here than it did at 5000ft in Denver!

Next step is adding a hood scoop to get cooler air into the engine, which hopefully will mean I can drop the octane booster and just run 93.