This is our TOUGHEST Muncie 4 speed. M22 , Super Case, Iron Mid Plate, EXTRA HEAVY DUTY Tailhousing. This transmission is ALL BRAND NEW, not a used or reconditioned part in it. Ratios for the geartrain are as follows: 1st gear is 2.20, 2nd gear is 1.64, 3rd gear is 1.28, 4th is 1.00. The best quality Auto Gear Engineering "SUPER CASE" Ready to deliver reliability behind those "Big Blocks" and small blocks too! FITS 1971 THRU 1974 GM CARS, AND ANY "CUSTOM APPLICATION" YOU MAY HAVE. QUESTIONS? Call Monday thru Friday 8:00 a.m. to 5:00 p.m. TOLL FREE 1-877-614-4327