This is the D9BC casting number 200 six bellhousing for use with the 67 and later 170/200 six block with high mount 2 bolt starter, it is setup with cable clutch system used in foxbodies, they were used with the SROD trans but is cast with the provision for drilling the T-5 trans pattern and is the deeper bell for use with the SROD/T-5 length input shaft so no adapter plate required. The register hole is sized for the SROD which is slightly smaller than the T-5 so would require boring larger or turning down the T-5 bearing retainer to fit. Comes with the block spacer plate and fork $ 175.00 + shipping OBO