I don't know of any retail places off-hand to buy the Z1, but I can tell you this; find yourself some import enthusiasts that bought a VX and yanked the drivetrain to swap in a more powerful motor. They wil practically give it all away.
To swap another Civic Hatch over to a VX You'll need a 5 wire O2 (LAF sensor) a connector for it, the EGR control box and a connector for that as well, and a P07 A00 or A01 (federal emissions) ECU. Basically it's just wiring on top of a regular engine swap for a Civic.
Welcome to EM as well! And don't hesitate to ask questions along the way.
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