As fahadwizz said, change the head, to wire vtec solenoid change the ecu, d15b came wid obd1 and obd2 so buy accordingly. Distributer is of single jack and double jack so harness should be compatible or u have to buy distributed as well.
Now buying in bits will be expensive and time consuming better option would be to swap whole setup.
Note: I am not an expert, can be 100% wrong