YES ALL V6,S FROM 98 AND LATER ARE ALL DOHC. BLOCK IS THE SAME DESIGN AS THE OLDER ENGS , AND A LOT OF THE PARTS ARE INTERCHANGABLE ON THE 3.2 ENGS BUT NOT THE 3.5 , THE BLOCKS ARE NOT INTERCHANGABLE WITH THE OLDER ENGS AS FAR AS INTERNAL ENG PARTS AS THE DECK SURFACE IS DIFF WITH THE OIL AND COOLANT HOLES , AND THE HEADS ARE NOT SWAPPABLE, ALLTHOUGH THEY LOOK VERY CLOSE , THEY ARE MUCH THINNER IN DESIGN THAN THE OLDER ENGS , BUT THEY ARE THE SAME BASIC DESIGN. THE 3.2,S ARE THE SAME BORE AND STROKE AS THE OLDER ENG AND THE CRANKS ARE INTERCHANGABLE , BUT NOT THE RODS OR PISTONS , BLOCK HEIGHT HEIGHT IS DIFF, PISTONS ARE SHORTER MUCH LIKE THE 3,5,S JERRY