[mmbt0ne]

I really don't think I like the turn 3bet. SB looks like a set, or 2-pair, and while you have some draws, I don't think they're worth the 3bet.

One argument people might have is that you're clearing up your T outs in case MP3 has a J, but he's already not getting odds to call a gutshot if you just call the check-raise (8-1, which, even with implied odds, would be pushing it).

If he has some junky 2-pair like 98, you only have 17 outs on the river (3 Qs, 3 7s, 3 6s, 4 Ts, 4 5s).
If he has a set, you have 8 outs on the river.
If he has 75, you have 3 outs to a split, and 4 outs to a win.
If he has 7T, you have 3 outs to a split.
If he has JT you're finished.