dude go to this web site it tells you all kinds of stuff

http://hybrid2.honda-perf.org/tech/4gtech.html

it doesn't have anything about 99 swaps but I would treat it as you were doing a 92-95 civic ex motor swap it will be mostly the same
One thing you will have to do is use the dx wiring harness because the plugs are different. you have an non obd car and and obd 2 motor.
GOOD LUCK