Hey guys, what can you tell me about these? My new boat (new to me) has what is basically a 525SC motor, and I want to know a little more about it. I have searched both here, and on the internet, but cannot find much info. I went to Mercurys website, and there are no archives for this motor. I know the blowers were made by Weiand, and I know they are not the biggest, or best sized, but better than nothing. Are these the same as the Weiand 174? Also, are there intercoolers available for them? The intercooler is just a thought, but i will probably upgrade the blower down the road instead. Any info would be great!