I plan on welding a 1/1.5" sanitary ferrule and using this:
I would probably use this: http://www.brewershardware.com/TC15F10NPSCOV.html
for the electrical connection, so I'd weld a triclamp ferrule to the pot.
I guess what I really need to know is, how far up the side does the curvature stop and become flat to where the bottom of a hole can go.
No biggie, I may not even end up going with a blichmann at all, but definitely a flat-bottom pot of some type.
Thanks for the replies