how to replace the transmission front input seal?

Need to remove the transmission, then pull out torque converter. Remove old seal, install new one. Reinstall torque converter, and MAKE SURE IT'S ALL THE WAY IN - ENGAGED WITH THE PUMP, otherwise big problem! Make sure all the fasteners are torqued CORRECTLY (over tightening doesn't mean correct torque!) fluid level is correct after repair. While you are at it, replace the rear main seal also.