3/6 vs LAGs - call flop on implied odds for runner-runner?

I've come to realise a la sshe that folding a long-shot draw in a big multi-way LAGgy pot is bad, but am still struggling a little with implied odds while at the table. Can anyone find a flop call here? Looking back i see i called a 3.9% shot with immediate odds of 16-1, needing to make a further 5BB on the turn + river. A couple of weeks ago i would've walked away from this on the flop, so am i spewing now or have i seen the light?

Reads:

SB: 75 / 12.5 / 0.8 / 16
UTG: 55 / 6.5 / 1.2 / 105
UTG+1: 55 / 6.5 0.8 / 16
CO: 18 / 15 / 2.6 / 159
Button: 23 / 4.1 / 0.8 / 122

Note, reads on SB and UTG+1 v weak, but had just seen UTG+1 cold call a raise preflop with Q5off (and take it down with 5s full), while SB was raising/reraising any overcard draws. Basically i was looking for an excuse to stay in the hand with these guys.

Party Poker 3/6 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is UTG+2 with 7[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/club.gif[/img].
UTG calls, UTG+1 calls, Hero calls, <font color="#666666">3 folds</font>, CO calls, Button calls, <font color="#CC3333">SB raises</font>, <font color="#666666">1 fold</font>, UTG calls, UTG+1 calls, Hero calls, CO calls, Button calls.

Flop: (13 SB) 2[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">SB bets</font>, UTG calls, UTG+1 calls, Hero calls, CO folds, Button folds.

Turn: (8.50 BB) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">UTG raises</font>, UTG+1 calls, Hero calls, SB calls.

River: (16.50 BB) A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">UTG bets</font>, UTG+1 folds, <font color="#CC3333">Hero raises</font>, SB calls, UTG folds.

Final Pot: 21.50 BB