The compatibility is limited on node placements but they for sure work for @Brewbuilt's 379 (most sleepers) & the pm 389 as well (same node placement). The racks are best suited for the bottom and most middle node and the frame mount hydro tanks are in the pack as well but they only work on the pm 389 as far as my knowledge goes.
I hope you all enjoy this as much as I have making it!
