i need to get a smaller exhaust houseing for my turbo heres the specs on the turbo SHAFT & WHEEL TRIM 64.5mm COMPRESSOR WHEEL SUPER 70 60.5mm
TURBINE HOUSING A/R .84 and this is on a stock 81mm ls motor it a monster or the interstate but no good on the street would like to put a 63 ar on it does any one know where i can send it to and get it changed please help

 

What turbo do you have? If its a Garrett you can get one directly from them. I remember when I had a T04B with an .82 housing and they said as long as it was new they would replace it with a turbine of equal or lesser value. And I didn't even buy it from Garrett.