Six, read the topic jusride listed that is what I read and it will explain everything. I have been very pleased with the results of doing this and engine stays right at temp under every condition I put it thru. I just got home from taking another test ride and temp was sitting pretty. It is 90 degrees here today with NO wind and high humidity and the weather stations say it fells like 103 degrees. My engine hated this before but run perfect today Anyways I recomend trying it to anyone before they spend alot of money on new parts like I did. Ohh yea the topic talks about difference between cast and steel impeller in water pump and I am running the steel impeller.

Stephen