I been searching for information about a #16 603 head but I haven’t found any information I need to know if it’s a turbo head or not

#16 head is for a NA 603

example: 603 016 xx 01

the two x's is your cylinder head number so make sure you read your number correctly because they all have 016 after the 603

I didn’t see all the digits it reads 603 016 xx and that’s it no more digits

since you put the x's in that means you don't know the head number then.

Looks like a number 20 in the bottom part but the top of the number is missing weird. Is there a way to know what number is it ?

If it's 20 then I'm pretty sure that it's a turbo head

I’ll try to post a picture

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I think it looks like a 20 what do think ?

looks like a 20 to me

Thanks for the help Chrituna