Go for the '95 SSEi (although I may be a little partial on this one
). I have never regreted getting it and it does MOVE. I may not be the most powerful Bonneville out there but (if my memory serves me right) it is one of the lightest Bonnevilles that are '92+. I test drove a mid 90'* SHO before I got my SSEi and the Bonne is faster.
Why just settle for an equal car to his when you can get one that will school him!?
As far as pricing, you are probably looking towards the $9000 US range. Might be able to find them cheaper or with less options.
BTW: Aren't some of those mini-vans running with 3800'* now too?