From memory...

Axels: B series should be the same, important thing is to get the half-shaft (intermediate shaft) that corresponds with the engine you are putting in. After that, any b series manual axels should do.

Mounts: your mounts are fine, it is your brackets that are different. You will need a rear engine bracket and LH engine bracket off an EK4. I got these off ebay fairly cheap. In the US the car is a 'Si', so search for that. I had trouble getting a hold of second hand ones.

Wiring: assuming you are currently vtec-less, you will need to wire in Vtec pressure switch, Vtec solenoid and knock sensor. The rest depends on obd versions I think. E.g. there are different distributor plugs for different versions. If you're dropping in a B18c2 and depending on your ECU choice, you will need to wire in the IAB for the secondary butterflies I think.

Try google search, there is plenty of info on US sites especially. Take the above as a rough guide, it's been awhile since my swap and I've tried to forget it.

Joel