Two Pair no good?

[spacemonkey57]

I've only got 14 hands on the villan here and he's 21/8 with no meaningful postflop data. Do I call the turn here and call a non-scary river? Do I call down no matter what the river is? Should I even call the turn raise? Thanks.

Party Poker 2/4 Hold'em (10 handed) converter

Preflop: Hero is BB with 7[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">3 folds</font>, MP3 calls, CO calls, <font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: (5 SB) 3[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG+1 folds, MP3 calls, CO calls, SB calls.

Turn: (4.50 BB) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP3 raises</font>, CO folds, SB folds, Hero calls.

River: (8.50 BB) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP3 bets</font>, Hero?

Final Pot: 9.50 BB