I’ve successfully used a 42” Panther Mill with a MS661 for some time but had a need to upgrade for a slightly more girthy project: hence the 60” set-up. The quality of the components are excellent and typical for Panther. The rails are considerably more substantial to offset the extra weight of the longer bar, chain and an MS880 powerhead. With just a little thought, it all bolts together very neatly indeed. Be alert though, to an absence of written instructions. Similarly, I needed to be ‘creative’ when transferring the winch/ratchet across because the profile of the housing doesn’t sit well on thicker rails, requiring the purchase of a couple of longer bolts (unless there’s a sneaky workaround). Once complete though, it’s a pretty impressive thing!