1/2: Bottom set facing river PSB

1/2 NL, ~$700 effective

I’m viewed as fairly tight by V.

I open 33 to $10 from UTG+2. Four callers including V, a loose-passive friendly fish in the BB.

Flop ($50): JT3r
V donks $15. I raise to $50. Folds back to V, who calls.

Turn ($150): 4x
V checks. I bet $100. He calls.

River ($350): 8x
V now leads $300.

Some reads on him:

* Loose-passive home-game player.
* I’ve never seen him bluff in hours.
* Just 2 mins ago he slowplayed the nuts in another hand.

Here's the HH on that one:
Vopens $20 with AKo, CO & BTN call.
Flop ($60): JTx
he checks, CO checks, BTN bets $45, he calls, CO calls

Turn ($195): Qx
Checks around

River ($195): 8x
He checks, CO bets $100, BTN folds, he check raises to $225, BTN calls with T9o and he tables AKo

* Another hand, he called my PFR, check-called three half-pot bets with J7o on a JT832 board versus my KK.

The sizing was what really got me. In 5+ hours I don’t think I’d seen him make a bet anywhere near this large, especially into me.

At the table I thought:

* Q9 gets there, but would he really donk the flop with an OESD?
* Would he pot the river with JT/J8/T8 for value?
* Or is this population just massively underbluffing this node?

Given the live reads and sizing, are you calling or folding here? Is this an exploitative fold versus this profile, or is bottom set simply too high up in my range to let go?