The M62 Eaton blower came stock with a 3" pulley. It is less efficient than an M90 (series II engine). I thought my Supercharged '95 SE was modified by the previous owner, but alas I was wrong. It is still a screamer (and a sleeper)! There were not many SE'* that came with a supercharged engine. Most people opted for the fully loaded SSEi. I don't have any pics yet. Basically it is an SE with leather interior and a "Supercharged" badge on the front doors. It also has a spoiler.
I believe Speedguy knows of a 2.25" pulley for the Series I engine. (I think it was him that mentioned it on a previous post).
Retired Moderator, The Bonneville Club www.bonnevilleclub.com
RIP Oldsmobile, April 29
1995 Bonneville SE Supercharged (Stock)
Current Mods: Dirty GYM Sock air freshener.