If you don't want to cut the frame, I have heard of people making a bracket out of bar stock, square tubing would work too, and shape it kinda like a coat hanger missing 1 side. So, you have a long straight piece that then comes up a few inches, then back in to about the middle of the bar, at an angle. Then straight up. Think of an upside-down question mark without curves.
The long part attaches to the engine, the side piece is to clear the frame and then it cuts back to the middle to maintain engine level while you slide the engine out. To the right seems to be the best way.
The ride IS the adventure. The destination is just to get gas!