Edelbrock Performer RPM (7577) and 360 Magnum CI heads

Just for reference:
My Eddie-headed 367LA has been running on 87E10(street) since 1999.
The Scr has varied from 10.7 to 11.3 and the Cylinder Pressure has varied from 177 to 195psi. The KB107s are currently about .005 or better out of the holes, making the Q with the .039 FelPros to be .034>.032.
In the Early years, this engine was freshend up every winter five times in a row; because it was my DD; and I stuffed a 318 into it for the winter.
Each winter, three times in a row, I avoided catastrophe, from various shortcomings of various machine shops. The fourth was a charm. I did it one more time, and it was again solid, so that was the end of her freshenings. Shortly after that I got a better paying job, sold the 318, and the Barracuda was retired from DD duty.
Not once was there any evidence of Pre-ignition/Detonation (and I don't baby her), and, in fact, I finally replaced the sparkplugs last fall (October) for the very first time; not because they needed it but because I thought the car was sold, and new plugs were a part of the deal. My guess is that those plugs had to have, close to or better than, 100,000miles on them.
A long time ago I put out a thread here on FABO, asking what pressures and fuels guys were running with their Alloy heads. I heard numbers as high as 205psi, on 94gas. But more typical was 185ish psi. Most guys are NOT running 87. Most are running 91. Nobody wants to run Ethanol.
My Barracuda ran 93mph in the Eighth, on it's only run ever..... on that stinking 87E10 with no adjustments from street-tune. I just drove it an hour to the track, dropped the exhaust, made the run, didn't break anything, bought some merchandise, ate the crappy track burgers, watched the funny-cars, reinstalled the exhaust, and went home. Had a great day with my 20 year-old son.
My secret?
is a 2-stage timing curve that slows down after 2800 rpm, and is delayed to not be all-in until about 3200/3400. All-in for this girl is 32>34 degrees.
In the intervening years, the cost benefit of running 87 versus 91, has bought me a lotta goodies; I know it paid for the Eddies, a long long time ago.
Jus food for thought.

Oh yeah, I'm retired now, so thinking of freshening that 367 this coming winter. She's a great engine!