When the buckle is turned flat, it is as wide or wider than the body of a telescoping stabilizer. The buckle is positioned where it will interfere with the edge/lugs of the tires, so the width doesn't matter anywhere else along the stabilizer.
If there is no interference between the tires and the buckles with an implement installed, telescoping stabilizers will also fit. If there is contact, telescoping stabilizers will also hit. If it's just on one or two implements, flipping the link pins to the inside (if possible) will give room, or wheel spacers can be added.
I build a lot of stabilizer sets for L2501's. Interference on late models is about 50%. I haven't heard from a single customer with clearance issues on L3301's, L3901's, or L3902's. I'm not clear on why it manifests on L2501's.
For customers with L2501's, I haven't had any contact me back and report interference between my stabilizers and the tires. If they had sufficient clearance with turnbuckles, my stabilizers have also cleared. Of course, it is possible that it has happened and they haven't let me know.