I see a lot of folks replace their 350 with a 400. The pressure plate (PP) and TO bearing are different for these two motors. Often the flywheel and PP are not changed. No big deal, they fit fine. The same is true for a 400 2-bbl. If you had a 350 motor or a 400 2-bbl, you probably have a 10.4" PP with flat fingers. The TO bearing has to match the PP.
More than likely you should order the PP and TO bearing based on the motor you originally had. And flat fingers use tall TO bearing while bent fingers use shallow TO bearing.
