I couldn't find a left hand cheek piece for the impact so I modified the ones on my 2 Impacts. Included are pictures of the modification. If you are interested in how it was done read on .
I removed the cheek piece and Took 4 3 mm screws and cut off the head and turned them to a point on the lathe. I then installed them into the frame with the points facing up. then I took the cheek piece and reversed it and set it in place and taped it with a hammer over where the screws were. This left four nice divots so I could drill the cheek piece in the right place with no mistakes.
I drilled the four holes from the bottom and then flipped it over and drilled out the holes with a square bottom cutter for the screw head clearance to the proper depth. Then I installed the cheek piece and scribed a line for the magazine clearance cut to be made. I then scribed a line from the cut forward to the end of it. I then cut the piece out with a hacksaw and squared everything up with a file and sandpaper. The whole project took about an hour to complete.
The second one I used a mill to cut the magazine cut and remove the forward part of the cheek piece it took about a half hour to complete job. It looks nice and works just fine and all I cut up was the cheek piece cheep and easy to replace.
I removed the cheek piece and Took 4 3 mm screws and cut off the head and turned them to a point on the lathe. I then installed them into the frame with the points facing up. then I took the cheek piece and reversed it and set it in place and taped it with a hammer over where the screws were. This left four nice divots so I could drill the cheek piece in the right place with no mistakes.