Thanks for the interest in the Q-Jet manifold. I have had some setbacks in building this thing. Two different attempts at welding the plenum to the carb mounting plate warped both plates. My plan is to increase the plate thickness from 5/16 to 3/8 and to bore the large holes after welding. Secondly, the rounded plenum corners makes it very too difficult to build the tapered transition cones connecting the plenum to the intake runners. So now plan to make the plenum rectangular with straight sides. This should simplify the building the transition cones. I hope to have something built by the end of the year.
