400NL flopped trips against all in

[srebbeg]

Session is about 30 hands in for me, Villain had been on the table for about 1 round, this was his first hand that he's played.

Have the following hand:

PokerStars No-Limit Hold'em, $4 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG+1 ($659.80)
MP1 ($848.15)
MP2 ($400)
MP3 ($342.50)
CO ($564.15)
Button ($345.55)
SB ($396)
Hero ($616.40)
UTG ($406)

Preflop: Hero is BB with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">MP3 raises to $20</font>, <font color="#666666">3 folds</font>, Hero calls $16.

Flop: ($42) T[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $40</font>, <font color="#CC3333">MP3 raises to $322.5</font>, Hero ???

I'm tempted to call, but very, very unsure. The only hands I can really put him on would be AQs or JJ, with an outside chance of AA/AK.