Can lift retrofit kits be used on a tractor without a cab?

Yes. What matters is not the cab but the presence of a cable-controlled Lift-O-Matic mechanism. Since on a cabless tractor the kit will be directly exposed to the weather, the LFT20's IP66 galvanised metal housing or the LFT54's galvanised sheet metal box and embedded watertight board become important. Position the switch at a point sheltered from rain that the hand reaches comfortably.

The points to watch in cabless use are these:

On tractors with a cab the box is generally mounted behind the cab or on the inner face of the fender, and the switch on the in-cab console.

Knowledge Center