I recently aquired a blowed up 99 150 ficht motor well not completely shot just one piston.After doing some research on this motor that,I plan on rebuilding Ive been hearing about some updates they did to improve these motors.Can anybody tell me anything about a powerhead update.Did they change anything to the actual motor or is it just a computer update.model# E150FRLEEA ser#604688181<br />I would appreciate the help thanks.