A complete drop-in my friend nothing else but the DPFI to MPFI and you need a PM6 (CRX SI) or PM7 (CRX JDM) each will work good the PM7 better I did it on a 4dr 91 civic and it's good believe me and it's enough to beat the shit out of those CRX with the SI D16 engine (no offense guys) but with a header and cam gear etc ... It will run very good and the DX tranny does work also not as good as the SI or ZC tranny would but hey it's a start. You'll also need the distributor for ZC or SI and the injector resistance box that's if the engine your buying does not have it, which it won't but you can get it for less than $20 dollars. Hope It helps with all the aftermarket parts I have AEM cam gear, DC header, MSD 6AL, MSD blaster, magnecor spark plug cables 2" pipe and exhaust I think that's it, I just did 15.9 on the 1/4 mile @ 92 miles an hour I don't think that's bad.. Hope the info helps, te veo panita.
DA. Crespo
San Juan, PR