There are some pictures of Hunters in the gallery. At least a couple show the tongue jacks. Both are top wound. Don't look to be anything special. Looks to be a pretty light
I recently changed mine, due to an incident which we will not elaborate on to protect the ego of, someone. I just bought a generic one from Casita
for $25. These items are not brand specific. It just screwed on with 3 bolts in a triangle pattern. I bought stainless bolts just because... The nuts are usually fixed to the frame and don't come off. I don't know the specifics of your trailer.
I mention the attachment mostly because you don't have much choice of where to put the jack. There are offset plates and such but your's apparently got by without any special treatment. Assuming it didn't interfere before. And assuming the clearance you mention is from the jack post to the closest bit (probably an opening hatchback or tailgate) of whatever tow vehicle you have.