Hi I was wondering if the precision sc34 turbo is a ballbearing turbo.Also would it be a good turbo on a stock gsr motor or is there one better?Also is www.turbogoods.com a good company to get this from has anyone bought one from them?I dont want a ripp off.Also what kind of setup .48a/r or .63a/r would be best?The hp goal is about 350 to 400whp.