The San Francisco region of the SCCA is successfully running Sealed Spec Miata for the 1.6L cars using the dyno at Thunderhill to dyno seal all engines in that class below 113hp. They chose 113 because that is what an engine built to OEM specs should get. No more $20,000 "spec" engines.
I, and most likely many others, would come back into FF if the SCCA set up a similar class that would include running a spec tire also to save cost.
It would be purely for the benefit of the drivers and not the engine builders and tire companies.
What I suggest is that there are still many of the Kent engines out there. They are not just going to up and all disappear. So instead of everyone jumping off the $10,000 cliff to convert to FIT, how about lets dyno seal all the kents like it should have been done back in the 60's when FF was supposed to be the low cost entry class for formula cars.
I suggest a dyno limit of 95hp since anyone should be able to get that much building a motor at home. Call it Sealed Formula Ford (SFF).
Thoughts anyone?