think what could he shove here? you said nothing about how aggro he is

i can figure something like: TT,99, ATs,A9s, AQd, AJd, QJdd.... we could add AK since the Ad is on board and he doesnt put you on KdQd with the 3bet, all these combos are in his range from his stats in my opinion.

that is all i think he would shove on turn.

Board: 3h 9d Td Ad
Dead:

equity win tie pots won pots tied
Hand 0: 46.645% 35.28% 11.36% 326 105.00 { AhKd }
Hand 1: 53.355% 41.99% 11.36% 388 105.00 { TT-99, AKs, ATs-A9s, QdJd, AKo, AcQd, AhQd, AsQd, AcJd, AhJd, AsJd }


you pay 1.65 in a 3.65 pot so your pot odds are 30% and equity is 46% according to stove so calling against this range is ok. unless i did wrong the math .

if he isnt very aggro then i would fold turn cause he only shoves sets and flushes.