Yup, it's a JF and it's an insert style. The pump is "set up" into the boat (resessed) about 6 inches leaving only a 2 inch space to get in and patch the holes.
So I think it needs to come off completely to do it right . If I can't get it off I will think of something else but I thought since I have the boat tore down to a shell allready I may as well reseal the pump to the hull (thought this needs to be done every once in a while anyways, boat is 26 years old)
Here is a pic of the "set up" and you can see the holes I'm going to patch on the right side.
http://www.***boat.com/image_center/...set_up-med.JPG
Pic of the JF Pump (at least that is the model number on the name plate on top of the intake)
http://www.***boat.com/image_center/data/506/935Jet.JPG