Hey guys, I'm building a Frankenstein jet boat and need some help. I have a 02 1200 virage, I need to know what the thread size is for the coupler? I need to find a Yamaha coupler with the same thread size in order to use the GP 1200 pump i purchased. My only other option is to purchase to correct coupler and machine the threads in to match the Polaris. Any help would be appreciated.

Thanks