Hi all I just got done doing the 6% overbore kit with the 13;1 pistons from Ken. Taking it easy so far, and the spyder is still learning the new equipment, but I remain hopeful it will line out and make the investment worth while. I am starting to feel, however, that I may be in the market for a Commander when they get sorted out. With the 13:1s and a ceramic coated exhaust and the Leo Vince exhaust baffle less, it does have a nice bark to it.