Re: b swap
you need the LS motor mount brackets, the correct rear K mount bracket, b series shift linkage, b16 or teg axles (cant remember which for a hatch), and i can't remember for sure but i think you need to throw an obd1 valve cover (i think obd2 had an egr valve right in the valve cover?, someone correct me if im wrong) on it and use an obd1 intake manifold for all your obd1 wire harness plugs to plug right up.