Well time to post a few more pix. I have been plugging away at mostly rigging but it looks more like a boat every day.
The tank came and was epoxy coated and installed. Its 80 gallons. It was installed on lexan strips all in a bed of 5200 then screwed into the stringers. Just like the one I took out.
My boat was a twin I/O and came with the large console. I think this was a unique option because it had a storage bin in the console and a livewell in the floor aft of a 50 gallon tank. It also had a 50 gallon tank in the forward storage locker from the factory.
The previous owner acquired the seat door for the large console. SO…with the new tank aft and that large seat. I applied the Strick piano hinge method to access. I do like all of the storage.
Uhh...and this is what it looks like inside the door right now. Still a work in progress.

and the console is put back fairly original for now.
I went with this for a thru hull setup:

Basically after reading about it
here I decided I liked it. It went in nice and I think it will do just fine.
I started rigging the 2 pumps I had. A rule 2000 and a rule 500 automatic. Its tough keeping my bilge clean in the yard but the pumps seem adequate. Here they are with the installed thru-hull.

.....and the test:
On the hard..
I ran some battery cable (I believe 2awg). What have others done to get Bat power from the CC to the outbaord on a bracket? I am planning on breaking it with a switch at the transom.