There is a guy on FABO that uses a set just like this only he has a Single Turbo on a 318. He has had his on there for a good while with no problems at all.
Mine Dumps straight off the collector to a 2 1/2" pipe to a 3" Pipe and up into the Turbo Flanges on both sides. Should be plenty of flow out the exhaust.
We will see when it hits the Dyno. I say at least 425HP 425TQ to the tires!:smile: