How do I read this?

[mr T]

My out board model on the tag is S150TXRX. Is there a web site that explain what this mean?<br /><br />i believe:<br />S = Saltwater<br />150 = horse power<br />T = ?<br />X = ?<br />R = ?<br />X = ?

 

[rodbolt]

Re: How do I read this?

T = trim<br />X= 25" transom<br /> R = remote<br />X =1999 model run