Excellent, I am just about ready to install my SEI Alpha 1 unit on my 1975 Century Raven 165hp inline6,was considering scrapping the boat, when i was made aware that there was an aftermarket unit available at a reasonable price. I have completely rebuilt the engine, and contacted SEI to purchase a new alhpa 1, which i did, it was shipped early,arrived in good shape thanks to 1st class packaging. I was extremly impressed with the unit upon opening, top shelf appearence,professional people to deal with,from the operator who answer the phone to Ericka in sales and Justin in tech service . thanks to all, Don Kowats, Ct[/b]