I made my own plate for my Offy 194-292 4 bbl intake. I had a local sheet metal shop cut 1/4" billet aluminum to the needed size. I used my grinding wheel to shape it up, then I drilled and tapped the holes for 1/4" pipe fittings.
Be sure to test your water seal for leaks before you put everything together.
BTW, Cuthbert Georgia is in the southwest corner of the state, south of Columbus. Very rural area - I think it's close to Providence Canyon - the so-called "baby Grand Canyon".
I'm 20 mins west of Atlanta, otherwise I'd show you how I put together my water heat setup.
-magic mike-
