Bed swap

[Glo]

Bought a 2022 2500 At4 with a Duramax, trying to fit with a duramag aluminum service body. 
given the nature of current material markets and lead times, wait for a new model service body is 24 weeks…. I m hoping to get this into shape for work sooner. I found a Newley made 2022 service body but it’s made for model year up to 2019. My question is, will the bolt pattern work for the service body or will it not match up ? 

[Mat Noel]

Sorry this is a little late. I took my flatbed off my 2016 2500 and installed it on my 2020 3500 and the holes where the same. Only difference was 2 extra mount holes towards the rear of the frame. I welded 2 extra tabs on the flatbed to utilize these holes but it wasn't absolutely necessary.