Here's something to show your dad...
https://www.youtube.com/watch?v=7QzUfV8iTpQ
It's a blow-thru slant six that as no air box... and 500 hp.
I wasn't kiddding about the absolute necessity of obtaining a wideband meter ffor your A/F ratio... it's critical.
Do yourself a favor and make that a priority; you'll be glad you did.
Thanks for the kind words... :cheers: