Do not believe any of the Laser II's built for Mercury outboards will fit a Johnson/Evinrude. The Lightspeed designed for a OMC has special machining to make the outside wall that fits into the lower unit gearcase smaller. Then of course you need the hub kit for a 13 spline shaft.
From my experience, the Raker is a faster prop than a Laser II/Lightspeed by a significant difference. Tested a Lightspeed 22 and a Raker 22 both on the same day on White Bear Lake.
http://www.classicglastron.com/phpbb/viewtopic.php?f=103&t=8603"First was the Mercury Lightspeed 22" pitch. Same as a Laser II, with a good reputation as a performance prop that holds the bow up. The take off was smooth and gripped better than the Rakers. Bow lifted. Gripped well around the corners. But the top speed was 52.8 MPH at 5,400 RPM, slowest prop tested for the day. Good prop, but perhaps the blades are too big.
Next the two Raker 22" pitch props, 53.3 and 54.2 MPH at around 5,300 to 5,400 RPM's. The Rakers are not quick out of the hole, and lose grip around the corners, but they are fast and hold the bow high. The motor hums with this prop. With a Raker 22" last fall in cold weather with quite a chop and back wind, the boat hit 55.0 MPH, so 54.2 MPH today in warmer weather and 9 gallons of gas in the back seat was respectable"
