Possible Engine Swaps and mods

Hey, just wondering what are the possible engines that could go in my 82 accord 4 door 5 speed? also, what mods (exhaust, supercharger, tranny) are available on it, im asking because there's alot of bull on the internet about 82 accord parts. ALSO, I NEED A GROUND EFFECTS KIT BAD!!!!! annybody know of one for that year?