Well I got the 3-1/2" tubing and made up a head pipe off the turbo. The problem now is keeping the hose between the turbo and the carb hat from blowing off, I need to pick up better clamps.
The highest rpm I've been able to pull to is 4356 and them the clamps give up.
The numbers so far are; 489.1hp and 589.8ftlbs.@22lbs. of boost. The numbers are still going straight up, I don't know how much harder I dare push this poor thing with stock cast pistons.