Model years 1992-1995 have a center divider that comes within an inch of the plenum plate. This probably slightly increases low rpm torque but decreases higher rpm horsepower and volumetric efficiency.

Notice that 1992-1995 beer barrel intake manifolds inject all the oily PCV flow into the passenger side of the plenum so that it ends up in the driver’s side cylinders increasing carbon deposits on the piston tops. Compare to 1994 V10 system?