Does anyone have a diagram of the HC-130J wing dimensions and fuel tank locations?
If you're looking for the technical data, i recommend you the "service news" material, that can be checked out here: https://www.lockheedmartin.com/content/dam/lockheed-martin/aero/documents/sustainment/csc/service-news/sn-mag-v1-v10/V6N4.pdf.

For an overview, there's a diagram:


(diagram link: https://airwingmedia.com/downloads/lockheed-c130-hercules/).