Images added except for the one of the bus, since the current one (despite not actually being a shot from the show) is clearer and better shows the van's profile.

yes-already named in the page.

The school bus is a 3rd Generation Ford Econoline E-350.

Here are the cars from the school bus-poontoon boat episode:

The Bus (better pic, other one not in show)

1999 Chevy Camaro Z28, 2 stars

Dodge Ram 1500?, 2 stars

Chrsler Prowler, 2 stars