I've been working on adapting the 3D printed additions for my 1/32 scale OV-10 projects to a new project - a 1/8.7 scale RC OV-10A made by Motion RC. Here's a photo of the 1/32 scale rack/bombs and the 1/8.7 scale versions. I haven't actually received my RC model yet, so test-fitting and attachment work will follow. The RC model has a 55 inch wing span.
In this photo the 1/32 scale bits were all printed on my DLP printer. For the huge scale version I printed the rack on an FDM printer and the bombs on a DLP printer. (NOTE: the bombs didn't quite come out right due to support failure, but they're good enough for the test fit).