[Sivik]

in order to convert your non vtec motor to a vtec, your gonna need a few things.

1) complete vtec head that matches your block (in your case it would be a d16 vtec head, d16z6 or d16y8)
2) if the head doesn't come with it, vtec activation unit
3) oil lines to supply vtec mechanism
4) chipped or new ecu with vtec

It might sound hard but its really not, and if you wanna keep the d16 motor the d16 heads are real cheap.