generally speaking they are good reliable motors. as far as guessing about performance on a specific boat, thats a total crapshoot. weve got too many variables and not enough information.
The Vx on the decal on the cover simply indicates its a cross flow loop charged a model VX250 indicates OX66 EFI.
the 250 until 96 was carbed,in 97 they were EFI.
they were actually fairly durable but a tad thirsty