before the engine gets put in, it'll be easier to change the timing belt, water pump, and get a new clutch and/or flywheel. the timing belt and water pump are the common things done i've seen people do with swaps, probably save a lot of headaches in the long run. if you want to keep a/c, you'll need an a/c bracket from a b16a3 from a del sol or 99-00 b16a2. it shouldn't be a problem, unless when you go turbo it might be too big for a/c depending on type of kit you get.