Open Question: How to convert to vtec.?

ok…bear with me. I have a 93 civic hatch CX. under the hood I currently have a jdm D15B. The current cylinder head is a pm3-5(i think this head is out of like a 91 civic SI? some info on the head would also be great). And the ecu I currently have now is for the stock CX ecu code # p05. I just picked up a head off of a 95 civic SI for free off of my buddy head code P08. Ironically this is the orginal head that is supposed to be on the jdm D15B(i didnt know this before i got it.) I understand that i will need to have ecu P28 but how do i wire in vtec??? i understand i need a vtec solenoid.
Also if there is any thing else i may need to properly run this set up let me know. thanks