Interestingly there are actually THREE crankshaft seal tools..... two of them are VERY similar and the third is much bigger...must be for the back end.... I'll have to look in the service manual to see which is the correct one.....

edit: okay, the big one IS for the rear seal and the 9103 is the tool for the front seal (NA & SRT)... the 9101 is not mentioned.. it is slightly smaller than the 9103..

You put the new seal on the tool and then just line it up and tap it in.....