Wiper motor removal

I have a 62' Bel Air that I cannot figure out how to get it out. I have the assemaly (however you spell it) but it does not show the right one. It shows to big o' square motor and mine looks much flatter and more round.

I have had the car for about a month now. It is 99% orignal so I it not like I can start tearing away at it with out some help.

Thank you.

Where are you stuck in the removal process?

I cannot see where the bolts are. Do I have to remove cowl to see?

Yes. and to disconnect the linkage.