when i did this in mine i just swapped the plugs on my del sol harness with the ones from the JDM harness that came with the engine
had to change the plugs for the injectors, distributor, and alternator
had to lengthen the wires for the O2 sensor and i think one or two other plugs
thats it
all it cost me was a little time, some solder, shrink tubing, and electrical tape... everything else i already had on the JDM harness that came with the engine
take your time and do it right and it will look factory
everything runs perfectly, running off of my chipped OBD-1 P28 with a custom map that mimics the stock ITR map
(had a modified skunk2 map on there before that also ran OK, but was WAYYYYY too rich)
for axles, (as long as you dont do a JDM 5 lug conversion that has 36mm hubs) you can run 3rd gen integra axles, or Del Sol VTEC axles, there are others i think but im not sure
the shift linkage HAS to be from a Del Sol VTEC... anything else will need to be modified and will probably not work right
for mounts i used the hasport kit because i wanted solid mounts... you can use a combination of OEM mounts, but i dont remember which ones they were