There are many places to look for turbo kits my recommendation is Noah Automotive Specialties. They carry bolt on turbo kits by Greddy and MimoUSA. For a GReddy bolt on for a 96-00 civic ex you can expect to pay around $2,200.00. For the MimoUSA kit, which is available in cast or stainless, you would pay about $1,570.00. I just checked the site and they are listed. This company carries a lot of accessories for Honda's and other brands.http://www.noahautomotivespecialties.com As for HP increase it will really depend on the tune, but it not unrealistic to see about 50whp/45tq, but does depend on the tuning.