This specially designed aluminum mount for 3W 157/170cc motors used on models that have the right thrust built in and weighs less than 2 oz. These will save you a lot of time and effort. Machined from 6061-T6 with a 5/8 rise at the highest point . Just draw your horizontal and vertical center lines, then line up the cross hairs on the mount. There even is 4)- #4 holes so you can mount it to your firewall and use it as a drill fixture.

4 ea.)1/4", 1/8" & 1/16" boss extensions included

Available in 2-1/2 , 3 and 3-1/2 Degrees right thrust