Winters 4400 Series 6 Spline Quick Change Gears - Midget 8-3/8" Ring Gear - 1" Wide - Set #8 Release Bearing they include the dyno data

they include the dyno data of each one

Package includes the Moroso pick-up welded to the oil pump for a simple bolt-on installation

6 AN Male Banjo Fitting 12mm x 1

1980-1996 Jaguar XJS

3/8 in Thick Billet Rail

Winters 4400 Series 6 Spline Quick Change Gears - Midget 8-3/8" Ring Gear - 1" Wide - Set #8 Release Bearing they include the dyno dataProduct Description: Quick Change Gear Set 4400 Series Set 8 6 Spline 4. 11 Ratios 5. 75 2. 94 4. 88 Ratios 6. 83 3. 49 Steel Sold Individually For more than 60 years, Winters Performance Products has been producing high performance rear ends and driveline components for racing and street use. Their product offering includes everything from quick change gear sets to shifter assemblies, as well as many components specifically for the sprint car market.