I think 1980 was the last year for non computerized Qjets on the draw through turbo cars. They are different from other Qjets. The turbo carbs get their fuel enchment vacuum signal from a valve mounted after the turbo on the intake manifold. If you don't have the correct carb with that special internal circuitry and that PEVR valve, you will have to adapt a Holley modded for boost reference. Don't try using a regular carb.