I have just sent off a motor to jay and donald at BCS PERFORMANCE they had lot good info to share .Well I am going to have the tranny polished and the head well be ported and new connecting rod since they are weak if left stock . I am just excited to get it back. I well post all details here once it is done the dyno numbers well be posted and all stock numbers. All parts used these guys have been great to me so far and helpful to me. I have been using there intake it really makes the kfx what it she be . the prouduct is nice and fits well it looks clean. has any body else got one of there motors and what did you do to it