NL500: 87 on 876K board against donk

[Janis N.]

NL500, a "buddy" I know from 6max (pretty bad LAG; a losing player) is sitting lonely at a new 6max table, waiting for players. I decide to play him HU. The game just started, I think I raised and he folded a couple of times or maybe he folded to my cbet. No big pots yet.

Villain is SB with $234.
Hero is BB with 8[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] and covers.

SB completes, hero checks.

Flop 8[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/club.gif[/img] ($10)

Hero bets $9, SB calls.

Turn K[img]/images/graemlins/club.gif[/img] ($28)

Hero bets $27, SB raises to $54 ($166 behind), hero...?

Does it change if villain is no LAG but a loose passive calling station?