It should be as easy as a S13 to S13 swap. The difference is wiring, intercooler setup, and I think that's it. There are wiring services for S13 sr to S14 chassis as well as an online guide, so you do not have to worry. Intercooler wise, the hotpipe nees a little work (I am talking about a FMIC setup, that's what I did and I know). Both side need a longer 90 degree boot thing, and depends on the brand of the piping, may need extra piping.