thats a tough spot. JJ are very much in their ranges, and the action from SB OOP is suggesting crazy strength.
I raise the turn, but I think then that only brings the stack off from the turn to the river. it feels like anything from two pair to a set, or horrible play.. it seems like a tough laydown is needed ok the turn before a stack off, but I'm sure lots of people will think it's a insta shove. it is, as u said only 1 pair.