Nothing ambigious here! & no offense was meant by my (prior) comment, I was more complaining about the complainer. OK, plug in the can to ported & see if it gets activated (we're hoping not) and see what springs are in the dist (OE is (1) light one and (1) heavy one with an elongated loop on one end) & you'll need to bump the eng over or use a 1&1/4" socket on the big front bolt (if hand turning pulling the plugs sure helps. is this a BB? How would you like to shorten the slots (weld up/file down-a pain or the FBO plate-$25 to your door, it does work well & has 10-12-14-16-18 deg slots & is a drop in deal)