drfmf1, From the looks of the picture that looks like the MES exhaust which means it is the 7 port sleeve!! It would seem that the other guys on here that ordered the 7 port motor got your 3 port piston/sleeve in there motors and you got there 7 port in your 3r motor. There must have been a batch of 3 port and 7 port motors that got the sleeves mixed up at the factory. Dont worry, Russel at race factor will get you taken care of asap . Hopefully the other customers out there that recieved different sleeves in there new motors will find out before the break-in . Just get ahold of him and let em know.