First engine build.

I dropped heads off at machine shop. The machinist mentioned using chevy 2.02 valves. He said they are cheaper and use a 11/32 stem. I have heard of this but do not know anyone who has done this. He also said if I buy the parts I will save some money from what he can do. He is a pretty straight up guy. Is there any problems using chevy valve? Does anyone have a part number for right valve? Sorry for all the questions just looking for advice from someone who has done this. Thanks.