ok so make sure your new front end is from a 90-91 integra then get a service manual or helms guide, or chitons... make sure ya have a manual LOL you are also going to need to pop your fender liners loose to get at everything. They are secured with these botton things you will see em when you get underneath and start looking aroud. It is also easier to pull the bumper of you remove the turn signals from what I recall...
There are some good videos showing the process on you tube.