I finished building this 9146/ conversion, single turbo, on my '74 in 1978. Power was a 2.7L CIS with lower c/r pistons, methanol injection. Narrow body with 15" Fuchs, 911S front brakes, 9146 rear brakes, duck tail spoiler...a sleeper except you could hear it 1/2 block away . I kept this drivetrain until 1983, and went to 3.0L biturbo with intercooler
photo taken at CBS TV City by my friend Phil Flores
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