has anyone used the chevy 90° v6 for a turbo project? it has 18° valves, 2.15" x 1.625", 215 cc ports. ryan falconer successfully used a 3.4L version in the corvette gtp - a 1200 hp endurance racer. it was the highest specific output engine of its time. it's cheaper to build than stage 2 buicks, and offers more power.