I have therse W2 Classics I'm not using. They have low miles, only dyno time from what I'm told. They are totally stock ports and chambers and the literature I know of says they flow 260@.550" at 28" of water. They include the billet rocker stands, 1.5 rockers, and HD shafts. Not sure on the springs as far as life or pressures. I also have an MP water heated single plane and a modified factory Thermoquad intake for these for more $$. I would suggest these heads be gone thru and checked as I'm pretty sure they never were. Heads as fully assembled units are going for $3100 with the parts to match this. Asking $2K for the heads as shown and bolts, $2300 with both intakes. Buyer pays full shipping (UPS) with insurance. PM me here or email to
Jacksbud98@yahoo.comThanks!