Cannondale Model Question
 

The other day I was looking at bikes on Craigslist and came across a Cannondale mountain bike. The ad said it was an F400 but the frame looked like the killer v style. Also, the seat stays were a different design then what I've seen on other killer v frames. I've tried to research the model but can't find anything. Does anyone know anything about this model or if this is a feminine version? Thanks.

Any pics?

All the info I see for the F400 is that it's a hardtail.

Did the listing give a year? Have you checked Cannondale's archives, vintagecannondale.com , and bikepedia.com ?