itb clearance, high flow, frees up HP over the stock belt driven water pump, a bit lighter, not to mention it looks a lot cleaner with the block off...
here is one guy who ran it... this is what he had to say:
"what you should expect from the Meziere Water Pump installation, horsepower-wise. This graph shows about 9.6whp gain and 10.7wtq gain from the install. The faster you turn your motor, the more benefit you receive. It's not a huge amount, but this HP is in addition to the fact that your engine is going to run so much cooler. This really wasn't a HP mod so much as it is a cooling mod. But, every little bit helps!"
amen...