How common is a turbine housing that has a 3.5" v band? I'm moving over to 4 bolt turbos, and I bought the GN1 Performance 3.5" v band downpipe. After buying it, I decided to start turbo shopping and it seems that 3" is very, very common. I don't want to run a giant turbo to get a 3.5" housing that will work with this downpipe, and I don't really want to modify the pipe. Anyone running this downpipe? What's your experience with turbo selection with the size of this v band?