The rear mount bolts to where a pin hitch would go on the rear of the tractor right on the rear. The middle mounts the same place you mower deck lift would mount. The front mounts, the two angle peices are just to keep the plow straight. They bolt to the very front of the tractor. Sorry I couldn't help more but I was repainting my mower deck and mounting that up to my 990.Here's a few pic's of o home made plow I aquired. Pretty simple. This one was built for a 960 so I'll be extending it 6". Plans eventully will include power angle. The plow edge will have a pipe edge on it so it won't dig into the grass or gravel.