Hey Adam, so I sent your pin box info to Lippert so that I could verify what you have and found that you have the 1116 style pin box and that means the correct Gen-Y fifth wheel to gooseneck adapter is the part # GY48FR that you referenced. I also verified this is correct weight rated option for your 2023 Keystone Sprinter 32bh.
Is your truck a short bed or a long bed? Looks like your Keystone is setup to provide short bed clearance but wanted to make sure it wasn't a super short bed like... view full answer...