I have a used gorilla circa 2015 that used a more durable robic and over lighter than the current version. It has the OG robic hip belt that doesn’t have the stay slots in the modern hip belt. You can use the modern hip belt with the pack and mod it for the stays. I haven’t done this but there are steps online. The pack has a repair on the pad sleeve shown in the second pic. I sewed it up an works fine. Lots of miles left in the pack. I am looking for 120 shipped con us. Thanks for looking.