4 left in FT $55k, can I call with whiffed AK here?

[smittyuiop]

4 left in the FT $55k. Prizes are something like $13800, $8900, $6700, $4400. Villain (vetiver) has been playing aggressive and playing well, and also running good as hell. He perceives that I'm scared to play with him (partly true) and has been running over me (and everyone else) a lot. His preflop raise was standard and this was the first time I'd really played back.


Full Tilt Poker (4 handed) Hand History converter Courtesy of PokerZion.com

UTG 113,100
BTN 193,100
SB 486,436
HERO 322,515

2500/5000 blinds, 600 ante
Preflop: Hero is BB with K[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">SB raises 17400</font>, <font color="#CC3333">Hero raises 50000</font>, SB calls 32600.

Flop: 9[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>(102,400)
SB checks, <font color="#CC3333">Hero bets 75000</font>, <font color="#CC3333">SB raises 435836 (All-In)</font>, Hero ??

Ugh, before I even bet I felt like he would CRAI. He called my reraise pretty quicky and shoved the flop very quickly. What can he have that beats me? 88-QQ probably shove preflop, I doubt lower pairs shove here, most stuff with a 9 maybe folds preflop, and wouldn't he hesitate with top pair against my potential overpair? He does play draws very fast, and could be pushign me around with AJ, KQ, KJ. I could see him playing AA, KK this way I guess. Also any comments on preflop and flop bets welcome, maybe raise more preflop though I wanted to somewhat represent a big pair, maybe bet less on flop.