mchat -> This is actually a MetalMan/NRGY Heads collaboration.
The plenum and about 1/3 of the runners were cut off of a stock intake manifold. NRGY then ported the runners of the manifold (gasket matched to the intake manifold gasket).
Metalman then added a sheetmetal box plenum using the Boomba Racing Throttlebody adapter plate as part of the manifold.
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