As Cab says, without knowing the temps, it's a guess.
But location/airflow obviously matters; I like 'em behind the grille, and use as much hard line as possible.
I'm inclined to think the 2-pass is too small for that application.
Buddy ran a high-stall drag-only car, about 8x8 multi-pass cooler on firewall with a fan, and it was marginal.
Crutched it with synthetic fluid.