I have a 2007 arctic cat f1000 with a 128" track was thinking about putting rail extensions on it to make it a 136" track, couple of questions I hope someone can answer. Looking to add it on for ride improvement, are the extra 8" of track going to make that big of difference? Are there tunnel extensions that have to or should be installed and if so any idea at to where or how do I get them? Without going nuts because I mostly trail ride, however do occasionally go off trail, what is the tallest lug track that can be installed without tunnel issues. any help would be greatly appreciated.