360 A833 flywheel?????????

I am replacing my 318 with 727 auto for a mildly built 360 and a A833 four speed overdrive
i pulled the four speed and bellhousing from a 318 truck ( i didnt check the engine number so it may be a 360) and am looking for a used 360 flywheel(the one i pulled had one faulty tooth).I know the 360 is internally ballanced and the 318 is external what physical difference is there so i can tell what i am looking at if i find a used flywheel
thank you for any input
Author: admin