2010 sea ray 205 sport
F-250 CCLB 6.2 4x4 3.73 rear.
Engines
Mercruiser 4.3 mpi alpha 1.62
You may get a better response by posting threads in the appropriate forum, such as the gas engines forum.
Also don't create multiple threads on the same topic.
Also check your signature. It says you have a bravo drive but your post states you have an alpha. Which one is it? Makes a difference in possible problems.
Posting your engine serial number will help identify what you really have, or at least post more detailed information.