Exhaust gasket?

Does anyone have a part# for a 25 hp Kohler command exhaust manifold gasket/ gaskets? I am having trouble because the mower is 24 years old... Bunton BZT25 Kohler E-25KOH-H is the engine# . I was wondering if one of the newer Kohler command engine part#s would work?

This is what I use. It is the best stuff. I use it on my mowers and my race car. It's all any one at the track uses