Pair+ FD in 3 way pot

[ultimatemike]

$55 buyin, about 120 runners - Sorry, no HH

Reads: MP is usually prety solid. Frankly his limp here is strange considering his somewhat short stack. SB is just completely retarded and could have about anything.

Blinds are at 100/200, money's still about 15 people off, so not really a factor.

Relevant stacks:

MP - 1800
SB - 2100
Me - 3500

Both MP and SB limp to me. I check in the BB with 8[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img]

Pot is 600
Flop comes: T[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/club.gif[/img]

SB leads for 400, Hero?