Thanks to the guys on the G503 forum, I was recently able to discover that the vehicle I wanted to build was based on an International Harvester M2.4 chassis Link #1). Since they wrote the military designation for M2.4 a little differently then GCM, I couldn't find a model of an M2.4 until I asked about them here (Link #2)

Link #1; http://www.g503.com/forums/viewtopic.php?p=683366#683366

Link #2; https://armorama.kitmaker.net/forums/118988#980039

What I actually want to build is a "rocket truck" built by the Marines on Iwo Jima by mounting three Mark 7 4.5 inch rocket launchers to the back of an M2.4

http://www.ibiblio.org/hyperwar/USMC/USMC-M-IwoJima/img/USMC-M-IwoJima-p129.jpg

http://historylink101.com/wwII_b-w/marines/IwoRockets/index.html

To see if it is feasible to build this model in the configuration I intend, I was wondering if any of you knew either where I could find Mark 7 rocket launchers and rockets, or knew how to make these items from scratch.

Thank you in advance for your help.

Tyler

http://www.ibiblio.org/hyperwar/USMC/USMC-M-IwoJima/img/USMC-M-IwoJima-p129.jpg

http://historylink101.com/wwII_b-w/marines/IwoRockets/index.html