Average LABOR Cost for installing pro-kit springs, Dampers, and Anti Roll Bar kit?

I might purchase the Pro-System Plus made by Eibach, and If I do, Iam buying the set from TireRack for $778 to install on a 99 CIVIC EX. I wanted to know how much is the average labor work to install them. I live in Newark, NJ. How do you find a shop to trust besides online feedback?|||labor runs anywhere from $60/hr to $85/hour. You should be able to find a labor manual that gives you the minimum labor hours for the job ( usually 4). You can also get free estimates from local shops.