I'd like to know who sells good quality skid extensions for my M-10 suspension on my '04 700 xcsp polaris. I am going from 121 to 144, rotating my chaincase, and going to aftermarket coolers. The only extensions I see are 121 to 136. I want to go to 144. Can I slide my suspension mounting rearward that much to make up the 136 to 144, or do they just make the right extensions somewhere? Any help would be great. Thanks