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18 After running the injected LS7 combination, we decided to take Mast Motorsports up on its offer to run one of its single-plane carbureted LS7 intakes. Fully ported, the interior of the two-piece design was a work of art. Note that our intake was also configured with injector bungs for EFI use. For this test, the injectors were simply installed to eliminate vacuum leaks.