The oval plate is in the side of the midsection, part # 13 in the diagram.
Here's the parts diagram I was looking at:
http://www.crowleymarine.com/brp_par...rams/30065.cfm
Be very careful that you don't crossthread the bolts in the shift shaft connector and that you get the shift rod groove back in the connector where the bolt goes through the groove in the rod or you will rub the threads off the bolt. ALso, don't lose the impeller key out of the driveshaft.
I hope this helps,
JBJ