Mixed up valves

Did you take some before pictures? Maybe there's some distinguishing feature on one or the other that will identify it. I write numbers on my valve faces with a Sharpie just in case.

But....I wouldn't lose any sleep over it.

Are you going to do a valve job? Are you going to at least lap the valves?

When I completely rebuilt my 225, I had the head redone by my old school machinist including hardened exhaust seats. When I got it back I sat there looking at it on the bench and just couldn't bring myself to throwing it on the block untouched. So I disassembled it and did some pocket porting and gasket matching. Think I spent about 10 hrs on it.