Would You Use it?

[Russ/40]

The photo below shows a block with two head gaskets in place, one on top of the other. The top one matches the block with the trapezoidal holes. I don't have those, but I do have the round hole gaskets that match the heads. Will I have any potential water leaks if I go ahead with the gaskets I have, the round hole ones. Would you use the round hole ones without worry,

I know, I'm cheap, but why spend $50 if the ones i have will be fine?