D17 engine swaps for d16

first off what is the exact code for a vtec D17. Will a D17 engine mount onto the transmition for a D16z6. does it use the same engine mounts as a 95 civic ex? how does an OBD3 engine hook up to an OBD1 car? does the ECU plug right in or do i need to modify the harness to fit.

basically, is this an easy swap.