First off the DC5-R engine is a K20A(thats all it is no r at the end). To get that into a integra, he is going to need the complete engine and transmission, hasport k-series mounts for the integra, dc5-r ecu or hondata k-pro, wiring harness, custom headers or EP3 header/Hytech headers, and new axles...with a few little things here and there. if hes doing the install him self hes talking about $5,000+ in total cost.