I plan on buying a 1025r and a rotary tiller. I also want to get an I-match for easy hook up. I've been looking at the Frontier rt1142 and the 647. I was surfing the Mutton power web store and noticed the 1142 states that it's I-match compatible and the 647 doesn't mention anything. I couldn't see why 647 wouldn't be. Then it dawned on me that the PTO shaft might have to be longer because of the I-match. Does the 1142 pto shaft telescope out further to accommodate the I-match and the 647 doesn't, or is that assumption totally wrong? Also, another noob question. Do these two tillers even include the pto shaft or are they extra? Thanks.