Here are some better sites:
www.rnrracing.com
www.forcedperformance.net
www.roaderaceengineering.com
www.hksusa.com
www.agpturbos.com
www.turbochargers.com
....the rest you can find yourself. If you want a good all around street turbo, you cannot go wrong with a TD06 20G wtih a 15deg clep and 7cm housing.