It is possible, but very, very unlikely you can find the KF accessory kit to install the remote reservoir. It consisted of a reservoir, a threaded MC cap and fittings. I have this remote reservoir and holder from a KF kit. There were other styles offered.
fittings.
This is the threaded MC cap. GOOD LUCK.
I used a metal MC cap, several fittings and a lot of JB weld to make this one.
Look between the driver’s side horn and the VR to see the remote reservoir I got from Wilwood. This set up worked perfectly and is the very first change I would make to any HJ I might own in the future, followed by a large gas line filter at the tank and another one at the carb inlet.