Also noteworthy is that I drilled out the stock brass water fitting in the jet pump. I could just barely shove a 7/32 drill bit into the fitting. There's plenty of material there to take it out to a true 1/4" i.d. Hmmm, 7/32 to 8/32 sure doesn't sound like much.....it can't possibly make any difference in cooling water flow CAN IT?? Well, here's the math for you..... drilling it out only equates to a 3% larger hole!! BUT,....when we're talking fluid dynamics and gallons per minute of cooling water flow......that's HUGE! I used a water velocity of 10ft per second. I would guess the cooling water is moving that fast, at least under throttle anyway. With the stock fitting that's a bit over 11 gallons per minute of water flow. Bored out to a true 1/4" is almost 15.5 gallons per minute. That's over a 22% increase in cooling water flow to your engine!!! Everybody should do this to the stock water fitting!!