Most of the LA engines were internally balanced, with the exception of the 360, and Johnson told us that can cause some complications when mixing and matching parts. Stroker cranks are usually internally balanced, so when stroking a 360, you'll need to find a neutral balanced damper and flexplate/flywheel. If you're planning on reusing your stock 360's torque converter, be sure to check it for counterweights. At the factory, torque converters destined to go behind 360s were balanced to match the crank, so installing one of them behind an internally balanced crank will cause journal-snapping problems. The weights were welded on, so you may be able to knock or cut them off. We'd recommend buying a neutral-balanced, performance torque converter, though.