Should have had some copper donuts/gaskets forming a seal with the block. Look up your bike on www.bikebandit.com -- they have exploded schematics which will show the gaskets, as well as give you an idea of price (you can probably find them for less, elsewhere, but their diagrams are superb).
Bookmark Bike Bandit's site. I find myself using it repeatedly, even with my Clymer, and the FSM. It's quick, convenient, and it gives a ballpark price on many parts. Occasionally, I do order parts from them, as well. Cheers!
1979 CB750K (sold, 2012, but not forgotten)
1983 Kawasaki 440 LTD Belt Drive (sold, 2011)
1993 Kawasaki Voyager XII