i'm marci. i'm new. hi.

anyway, i've got my sights set on a 1991 CRX hf, with a b18c inside. my question (which may be a stupid one, but oh well) is that when i go to do mods-- specifically, a cold air intake-- will i have to get a cold air for a b18c5 or a 91 crx? how do i know which one will fit before i buy it? basically- will an intake for a b18c fit in the bay of a 91 crx? also-- will the engine fit nicely or be a headache to get in? one more question... how much will the swap run for?