Facing river overbet

[Psydoc]

Completely without reads on this guy. Flop and turn action may be debatable, but I'm most interested in if you make the call on the riv.

NL400 (6 handed) Ultimate Bet Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($400)
CO ($192.90)
Hero ($792.50)
SB ($396)
BB ($645.40)
UTG ($271.50)

Preflop: Hero is Button with T[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to $14</font>, SB calls $12, <font color="#666666">1 fold</font>.

Flop: ($32) T[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $21</font>, SB calls $21.

Turn: ($74) 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $60</font>, SB calls $60.

River: ($194) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $301 (All-In)</font> Hero???