Stopping the knock: Lower compression and ported heads...

I wish you the best of luck and am anxious to see how it turns out, as I'm looking to build a 440 for a daily driver on 87 octane.

There are some interesting ideas here.

http://www.moparmusclemagazine.com/techarticles/mopp_1302_tech_pump_gas_power/cylinder_head.html