NEED HELP IDENTIFYING RAILS

[rheinss10]

I bought this SC3 skid frame and have no idea what rails are on it. They look like 136" hillcross rails, but they are 144" instead. They are definitly longer than 136" rails, i lined up an old 136" rail. I bought them from a used parts dealer on ebay and all he really had to say was it was out of a'04 mxzx. They have the front and rear arm out of a 121" and mount into regular loctions in 121" tunnel. I have search all over doo talk and snowest and cannot find any info on them. Any info would be greatly appreciated

Link to pics: http://s947.photobucket.com/albums/ad320/rheinss10/144 skid/

 

[lookup]

not really up on this but look similar to the 03 ish mxz rev 144ish hillclimb rails from ski doo could be totally wrong but saw them and guy told me something like that some body on here will know for sure

 

[rheinss10]

I was thinkin that they might be rails that ski doo hillclimbers got from the race dept. Any body know for sure

 

[rheinss10]

tttttt