At the end of last season, I changed my track from the 136" X 1.6" to a 144" X 2". i picked up the rail extension kit from Oles, very nicely made, you can't even tell the rail is extended. What a difference in 8" in track length & what a bigger difference in the 2" lug. I did not have to, nor did I change weights or re-gear. I checked my peak rpm which is hitting at around 8000 to 8040. I do not regret making this change one bit & I don't think you will regret it either.-Mezz