I raised my engine by 1.5” and dropped the tail of my 6spd. I haven’t put it through much testing yet so that is my only disclaimer. You can also check Hobby Racer’s first build thread to see what he did with a 5spd then a 6spd. There are a couple threads that show how you can easily mold your own engine mounts and trans mount. If you are not tracking your 818 reducing the height and molding your own trans mount might be a good option.