I remember 1960s Chevy/GMC, Dodge, and Ford vans with engines in between front seats. 1968 and later Ford, and 1971 and later Chevy/GMC and Dodge have the engines moved forwards and the cabs moved backwards with the rear half of engines still in the cab. 1975 Ford and 1996 Chevy/GMC vans have the cabs moved backwards and the engine covers became smaller. Dodge and Ford stopped making USA type vans and started making Europe type vans. Chevy/GMC still makes USA type vans.