TurboFORCE was the name of the package designed and engineered by
Craig Hendrickson and sold by H-O Racing Specialties, Inc.
in the late 1970s. It turbocharges a Pontiac V-8 engine mounted
in a "Gen 2" Firebird. The following reprint from H-O's catalog
and an article about TurboFORCE from Hot Rod Magazine
explain it well. Click on the thumbnail for a larger view or click on the
"text" below it for an easier read.