Had you heard of the 1/2 scale engines that Leornard Wood makes? Working, 1/2 size carbs, for a 1/2 scale 429 hemi (thank you Terry F!)

that is a 1/2 scale Holley double pumper on a 390, just to prove it works. He mentions in the video, that the floats were hard to make

1/2 scale 429 crank and head

Leonard Wood is 89 years old and spends his time hand crafting half size engine parts, and fires up a 390 with his 1/2 scale Holley double pumper