IIRC, the 94-96 had the LT1 engine and the 93 had the 350 TBI Either this is a really late 93 or it is an engine swap car.
You are correct. I am guessing this guy either doesn't know what year his car really is (wouldn't be the first time) or he has a '93 350 TBI and thinks 350 TBI = 260hp LT1.
I didn't realize that. I'm glad that you mentioned it 'fox! (Confirmed here BTW: http://consumerguideauto.howstuffworks.com/1991-to-1996-buick-roadmaster-7.htm) I've been working towards buying a particularly nice '93 in my area thinking that the 350 would be an LT1. Looks like I have to change targets now. There is a '94 not too far away that was a little more money but I think it's worthwhile to have a look. The '94 comes with snows too.