Amazon.com: LA Speedometer Gear 700r4 and BOP TH350 retainer, clip, 34-39 tooth driven gears, 15/17/18 and 19 tooth drive gears, and 2" housing : Automotive
1947-1977 All Makes All Models Parts | A8175201 | 1947-77 Aluminum Speedometer Gear Housing (2" Diameter) - TH350 Trans - 40-45 Teeth | Classic Industries