NL25 SH Call instapush Turn standard?

[stever1k]

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB ($26.25)
BB ($29.80)
UTG ($26.40)
MP ($32.45)
CO ($56.05)
Hero ($24.65)

Preflop: Hero is Button with 9[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $1</font>, <font color="#666666">1 fold</font>, Hero calls $1, SB calls $0.90, <font color="#666666">1 fold</font>.

Flop: ($3.25) 8[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">MP bets $3</font>, <font color="#CC3333">Hero raises to $8</font>, SB folds, MP calls $5.

Turn: ($19.25) 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets $23.45 (All-In)</font>, Hero calls $15.65 (All-In).

River: ($50.55) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players, 2 all-in)</font>

Final Pot: $50.55

Without reads - I had none - Is this an easy call here (I think so, what more than top set do you want?)? I put him max on an Overpair / Draw after he calls the flop. He instapushes the turn, imo the 2 [img]/images/graemlins/club.gif[/img] is a total blank. Should I consider 5s7s, or T7s beeing in his range?

How would things change if the flop comes [img]/images/graemlins/diamond.gif[/img] [img]/images/graemlins/diamond.gif[/img] [img]/images/graemlins/heart.gif[/img] and the turn hits [img]/images/graemlins/diamond.gif[/img], or flop [img]/images/graemlins/diamond.gif[/img] [img]/images/graemlins/diamond.gif[/img] [img]/images/graemlins/diamond.gif[/img] ?