Shadetree mechanic guidelines used to get gaskets first - head, intake, exhaust, etc. - and then match them up to the parts you want to swap around. Checking for bolt holes, cooling and oil passages, and bore sizes of everything you wanted to match up. This will work for short block to head to manifolds and checking for accessory locations and mounts.This seems to work on most engines as long as you stick within the family (SBC, SBF, BBC, etc.) and the Ecotec I-4s seem to follow this too. May be worth a shot and you can be the 'expert' for doing these kind of swaps.