IMO, i would much rather run one of our stock cylinder Play/Dune ports. I feel they are more reliable, much faster, and will live longer. I dont like the shorter skirts on the Vito pistons, with the sleeve clear out by the studs we've seen trouble with leaks around the head and a chance of sleeves moving, and the transfer area is less than stock as the bigger sleeve protrudes into the transfer area. This is just my .02.