We drag race and have track tested a number of different reeds over the years. In a full drag port 358, 392, 421 cub and a ported 4mil Serval V-2's always ET'd fastest on the asphalt but the 4's that we tried on the 4mil Serval was definitely the way to go in all but WOT applications. I love the 2's and have at least 6 sets plus a number of packages of new petals but IMO you should go with the V-4's. They'll be a nice upgrade now and will work really great later in the Serval.