for the oil pressur just cut the prelude eyelt off and solder it to the accord one. you can also swap the accord egr over to the prelude intake, that might be easier so no wiring has to be done. the IAB is the secondary runners, its a black box with a round plug under the manifold, one wire goes to the ecu one to the common power (yellow and balc wires), and then knock sensor you jus add the wire and plug and run it to the ecu.
no step by step i really know of, if you dont already have a manual with wiring diagrams for your accord and for the prelude engine, you need to get them.