340 block?

All good points made by dano and 71340. I was assuming only exactly what you said and nothing more at all, just a good steel crank. But how much it's been machined does affect value or desirability. At .060, I'd start to be concerned, but at .035 you're fine, assuming you can get the pistons you want in that size (I have no idea what is available).

But to dano's point, any additional machine work means they put more $ into it, and assuming it's in line with what you want to do with the engine, could be a good thing.