I have a vast collection of pep files from other modlers I collected over the years when I was into pepakura making, This is the Iron Man Mk3 since one and two are already here on thingyverse, I'll work my way through all the versions, Please note the sizing will need to be confirmed if it suits your needs, Cheers Jace
"Sorry there is no reference about the pep files to the original Author"
Other than it was in Spanish
If you like the Mk4 Chest a revised version can be found here
https://www.thingiverse.com/thing:2213969
The author marked this model as their own original creation. Imported from Thingiverse.