Look like your into it. Polishing ports I will try another time on my engines. Tinkering with the car throttle linkages to see it work better and will be testing later today.
RTC-9 head shaved .065" "to the fin". Ported polished valves lapped, 11:1 CR.
geo change caused rockers to hit the valve cover. Fixed that with a spacer made from another valve cover and two gaskets. I'll get shorter pushrods with the 1.3s.
I'd put two side by side street fighter style, LOL!
Here's my updated engine pic. Gas tank mounts removed, new front mount,, lots of valve cover clearance, painted flywheel, doubled up intake flange,, engine area cleaned up overall... using stock carb with adjustable jet... the mixture setting with stock compression is far too lean for high comp.. adjusted a quarter turn on the custom carb mix screw (scroll up!)