I'm trying to decide on a new turbo and I'm looking at this one.http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-048&Category_Code=TBNIf I get it it will be the .78 divided turbine and anti-surge compressor. It will be going on a stock displacement 420a looking for close to 400whp.Any opinions on this turbo or suggestions of any kind?