If I am not mistaken,,
most all engines have the harmonic balance "keyed" (i.e. a slot milled into the cylindrical opening which goes over the crankshaft end)
And will prevent you from installing it incorrectly.
course I been drinkin' and who knows!
Anyway, R & R my man, make sure you use the right puller to take it off...if you don't you can muck up the crankshaft end where the holddown bolt goes...