i am having a 360 rebuilt by a machine shop to replace my worn out 318 (stick shift). the 360 was bought from a wrecking yard without a flywheel. i bought a 360 flywheel from a another local wrecking yard. the machine shop said there were no weights on the 360 wheel (so they assume its a 318 i got). i called the wrecking yard, which told me that 360 flywheels for sticks are balanced by drilling holes, and not weighted. weights are only used on flywheels for automatics. did i get stiffed by the wrecking yard?