[Larude]

I don't know mate... JJ, 88, JT, AT a set and a very weirdly played AA are in his most probable range (discount JJ and AA some bit, as he would probably raised with those. Because he is unknown it is difficult to assign Tx hands to his range (with x being a K or Q). But hell he may even play J8s like that. I would call and evaluate the turn as you have position; I personally don't like shoving a blank turn, because one pair hands we beat will probably fold (unless maybe AA), while better hands will call.