is there something else specific your looking for?
google for "OV-10 Bronco profile" looks like i can get some side profiles and top profiles for it. I believe there are some front profiles that I saw on the wiki page, the combination of all that should get you most of what you need, if not all of it.
If you are building a design from scratch there is nothing stopping you starting from any line drawing you can find on Google!
Just blow it up to the size you want.
If you are building a scale fuselage it helps if some cross sections are included.
The 52" span Antonov AN 2 in my avatar was built starting with this line drawing from the internet..