I'm going to ask why?

1. It's not going to fit. Anything short of a full tubular front chassis and it wont fit. Gaurenteed.
2. Whats the benefits? Your going to put so much weight in the front of the car.
3. Wiring. Good luck getting the car to crank, I'm not sure who (if anyone) makes a stand alone engine management and if you can get around the immoblizer.
4. Fabrication. Custom mounts, shifter brackets, axles, hood, firewall, shock towers.. ect ect Everything will have to be custom made.

If your serious about doing this, I wish you luck. If you can pull it off and make it work..my hats off to you. But I dont know what it is about a V6 that makes people want to put them into a civic..at least in the front. Want to do something awesome, put the V6 in the rear of the car. Make is a mid-engined Civic... that would be way cooler than having a 6-700lb engine in the front of the car.

Just my 2 cents.