water leaking for the two plugs under the offy manifold did i do something wrong

I'm not sure which plugs these are, there was a similar thread a while back ( here ).

It was a clifford, and sounded like the leak was going the ohter way.

I seem to recall a thread on those plugs leaking on an Offy (but I can't find it).

Yeah you put water to a intake that was not ment for water.That intake was ment for Exhaust Heat. But You can fix that Problem
Make new plugs and have them welded in. OR you can try and put epoxy over them. MAKE SURE the intake is super CLEAN and hope it doesn't leak. BUT welding new plugs is a Sure fix.

how can i hook it up for Exhaust Heat

Tom Langdon sells a kit for doing that. Other vendors do as well. Or make your own...

i called langdons today he told me to put stop leak and it worked does that stuff last long

It will also start pluging up everything else over time. Just fix it the right way The first time and you won't have any Do OVERs. Stop leak just Like any other TYPE of stop leak stuff IT's
ONLY a Tempary Fix to the Real Problem.
I could tell you to put Pepper,Eggs,Oat meal,And So on They all will Stop a Leak. (Crash/smash-up Durby Guys used all kinda stuff to stop leaks). But It's not the right way to fix it.
But thats up to you.