i bought a 06 f4i i wanna change the seat to a dual how do i do this

 

You can go with a seat cowel (like Targa) to cover up the 'naner, go with something spendy from Corbin, or change out your sub-frame and add a duel seat (I've seen others post their conversions). There are probably oyher options, and I'm sure more people will chime in.

 

littleevil, go to search and do a look up on f4i "split seat conversion"... there is an awesome write up from a member that did an 04 banana seat to a split seat 01-03 change.
Its not cheap and it will require work.