Mech fan suggestions…..

In light of the hot weekend coming, which will be perfect for testing, I'm doing just the following to see if each little change contributes enough so that as a whole it does the job. 1) I'm putting a 12" pusher fan back on the front, to help overall but especially at lights when the mech fan rpms goes down. 2) Going to use high 100 octane gas to help it run cooler. 3) Going to take a couple degrees of timing out. Hopefully with these three changes as a whole this will resolve the issue. If it doesn't, then it's scorched earth in the spring and starting over from the bottom up with a custom sized set up. I appreciate everyone's input and recommendations, I will run every one of them down and figure out the best way to resolve this.