Walt, I have a couple Odenthal mounts on our Margays with KT100’s that have very little angle to them, maybe only a couple degrees. I also have a two piece kt100 mount that has the third bearing support that is flat that I installed on a spare backup engine. I have 2 or 3 other mounts that came with a couple kt’s I bought, cant remember if they are flat or angled. I will check and let you know. What I have found is with the flat mounts it is more difficult to get the header/pipe mounted up without having interference from the rear bumper, the angled mounts kick the pipe up much higher at the rear of the kart.