Hi, i just changed my 98 EXI's complete engine to JDM D15B Non vtec Alhamdulillah its a real Pleasure to drive a perfect combo of Power + economy.
complete engine costed me 43k with complete uncut engine wiring + ECU from Rawalpindi my car was already automatic so used the old transmission over all spent 70k including complete flushing of old oils, brand new radiator + coolant, foundations, new belts, mechanic + electrician charges.
I would suggest to go for a engine assembly change if your self,generator,power pump etc are in good position, vti assembly will cost you around 40-45 and complete vti engine will be around 60k if you are thinking of transmission change add another 15k in it.