This Lakewood cast aluminum bellhousing connects most Small Block Ford engines to GM pattern T-56 and T-56 Magnum Transmissions. Designed as a compact, lightweight, and inexpensive option for transmission swaps not needing SFI certification, the LK9100K attaches in a factory-like manner to stock or Holley oil pans and includes a block plate for starter alignment and a dust shield. The starter register size is 4.084 inches and we recommend MSD Dynaforce starters 5090 or 50903 (black). Rounding out the kit is a Grade 8/10.9 hardware kit (Lakewood #50395) for both engine and transmission so all you need to do is pick out your clutch, flywheel, and release bearing. Suggest Lakewood Roller Pilot Bearing 50376 (For SBF using GM Transmissions – .594 ID).