You do it by adding washers or spacers under the left side of the engine mount. I would start out with 2 or 3 degs at first and see how it goes. Most of your problem is your plane is a tail dragger probably swinging a large diameter prop. It isn't so much engine torque you are seeing as prop "P" factor turning the plane the left. The blade going down on the right side is at a higher aoa than the blade coming up on the left. This can properly be called torque but it's not engine torque. It's the plane of the prop not being perpendicular to the air stream.

All of this has nothing to do with 2 or 4stroke

Denis