bellagio 10-20 deep: top 2 on the flop facing pressure

[mikech]

5-handed game in the wee hours, i open K [img]/images/graemlins/diamond.gif[/img] 8 [img]/images/graemlins/diamond.gif[/img] utg to 60, button calls and blinds call, 4 to the flop of:

K [img]/images/graemlins/heart.gif[/img] 8 [img]/images/graemlins/club.gif[/img] 5 [img]/images/graemlins/heart.gif[/img]

sb, a competent regular with a ~7k stack (i cover), leads for 160. i raise to 460. he 3bets to 1460. i call.

turn A [img]/images/graemlins/diamond.gif[/img]

he bets 2300, i call.

river 6 [img]/images/graemlins/spade.gif[/img]

he pushes for his last 2960. can i possibly fold this river after calling the turn?