How many aluminum panels on the top of a 172M wing from 1972? I'm looking into getting a wing to do some experiments prior to modifying an actual aircraft. Thanks to awesome folks on this forum, I've been able to find the wing of a 172M from 1972 that I can pick up now. 

However, I still need to know approximately how many panels are on the top of this specific wing. For example, anything like this 172S or this 172P would be perfect for me, while this PA28-140 configuration wouldn't work (too many panels). Do you know how I could find out about those panels for the 172M from 1972?

Thanks!
You way want to take a look at this video of a 172 wing rebuild. The wing is not lots of tiny panels but what you are seeing is the areas that the rivets are placed to hold the larger panel on.