Description Chrysler/Dodge 904 Neutral Balanced Night Stalker Series. Stall Range: Stock Replacement No Stall Added. 11 inch Core. Bolt Circle: 10 inches 27 Spline. 1.81 inch Crank Pilot. Bolt Size: 7/16 X 20 Thread ( Grade 8 Only). NO Anti-Balloon Plate. We recommend upgrading to a “Street Bandit” series torque converter if you have upgraded intake, headers, exhaust, cam, or gearing. We recommend upgrading to an “Out Law” series torque converter if you have any power adders like Nitrous (NOS), Turbocharger(s), Supercharger, or a Trans Brake. Warning: Cancer and Reproductive Harm – www. P65warning.ca.gov. Advertised stalls are based on a specific vehicle’s setup. All stall ranges will vary depending on your vehicle’s setup. Please contact us for more information.