B"H
Carlton: Have you looked into water injection? I built a system for around $125 that effectively controls pinging and allows me to advance my timing to get much better performance.
If you like I can send you the setup, but it's pretty standard: 12v water pump, solenoid, hoses and nozzle, fittings and relays.
Bill Hershkowitz 69 Monza Coupe 110 PG