Hello Y'all

We found a 57 235 for sale but it has the follow issue:

"It does have a small crack in the water jacket below the exhaust manifold. The crack is only on the external side (never had any coolant in the oil) and was patched with epoxy."

Does this translate into a problem we should walk away from or is it worth taking a chance on?

I'm having trouble visualizing where the crack might be.

Any Advice?
Thanks!