this is really a marginal spot I think but I would like to know what a correct (or more correct) line for this would be...

i am pretty sure I am in front here, so how should I play it?

villain is unknown other than he plays aces, any ace in fact.. i have seen him showdown Ak, A8, A5, A2 so far and there are the only hands he showed down... sample is very small and probably this info is irrelevant for the hand but still.. i think he is a donk.. so......

Pacific Poker
No Limit Holdem Ring game, Blinds: $0.25/$0.50
5 players


Stack sizes:
Hero: $74
SB: $93.37

Pre-flop: (5 players) Hero is CO with
UTG folds, Hero raises to $3, Button folds, SB calls, BB folds.

Flop: ($6.5, 2 players)
SB checks, Hero bets $5.5, SB raises to $11, Hero?

Unless youve seen him do that with KQ or KJ, I would fold.