I'd like to build a Tri Power for my '66 Pontiac 400cu.in. Starting with the Alum. Tri Power Intake manifold - Port Injection Injector location and perhaps the 7749 GM ECm - what would I use for Throttle Bodies ? Two dummie Throttle Bodies with throttle blades linked and one 'Functional TB ? Brien. NEW YORK eagle registry #501 eagle kammback registry