You might be right, you might be wrong. Very little information on the peak65. It looks like its made to look like the 45cc motor that turned out to be a dud.

You might have better luck taking your money to Las Vegas and putting everything on black. If you double up, then you can buy one of the other engines and absolutely KNOW its going to work.

Both of those motors are proven on the EFYak88. Also I find the published weight for the Peak65 to be a little nebulious and unbelieveable despite the picture of it on the scale. Generally when I have found something to be too good to be true....it tends to be not true. How you can have a motor that has more cc's then both of these motors and it suddenly weighs less than both of these other motors. Well its either untrue or parts of the motor would have to be made out of aluminum foil.