nice project. funny i startet kind of the same the last days. but it's a 1200cc 36 hp engine with gt1544.
hif38 carb
heads will be 33/28 or 35,5/32..bith out of stock 36hp single ports.
header is made of a 35mm merged header that i once shortened for a race 36hp supercharged engine. but after a view supercharger engine and after selling my last amr300 blower setup i missed the power a little.
with the dizzy i did in 2009 or so a stock 36hp dizzy with a saab 900 turbo pressur tin. was a little work but exelent timing. it set the ignition back the bore boost you have. stock up to 0,6 bar ...don't remember the timing retard. but with that i could handle 1,2 bar on a 36hp engine all day long.
timing and perfekt afr is the most importand! take your time with it...
good luck
chris