I just had the Marina replace my water pumps and thermostats in my Yamaha 225hp ox66 (twins) to the tune of $900.00. I am pretty sure that I could do the job in the future. Here's the question, I have tried to find a manual for these engines but I only see years to 98. Where can I get one for 2000 and what would be the best manual. Second they describe two types of water pumps, one is stainless is there a difference? And last are there any tricks I should know about before I charge into this in a couple of years.<br />Thanks.