I was reading a thread on Sturt Bars and read that some bars will only fit on p10 High port motors and some will fit on p10 Low port motors. Whats the differenece between high port and low motors for the p10. Which ones better? Advantages and disadvantages if you guys know of them. Why did Infiniti make two different port motors. Last question, I have a 1992 P10 and want to know what type of motor I have high port o low port or how can i tell if it's high or low port.