I tinkered with a set of small block heads in the 1970’s and did very well street racing. My kid still hears stories. Then I did 906 heads and then Indy heads that I went 8.60’s with. But I really never knew anything till I bought my first flowbench and ruined a few heads. Lol. Then I bought a manometer bench and hated it so I took the best of both and used Bruse’s flowbench plans and built this one. I could finally see what caused turbulence and how to fix it. Kinda self taught over the years reading and looking at pictures. I was addicted to it for awhile and would keep a note pad by my bed and get up at night and drawl sketches that came to me. Now I can pretty much look at someone’s work and suggest things to try. I’ve fingered a lot of ports. My son wants nothing to do with it. Ohhh well after I’m gone he will have to quit Racing or pay others to do it for him.