I just priced out a solo seat conversion that included the seat, rack and mounting parts.
Amazingly the whole set, including shipping, was cheaper (over $100) from Sibenrock in Germany than ordering a stock or Corbin seat and mounting parts from Bob's. The rack is the real kick in the pants from Bob's as far as price difference goes.
Sibenrock has two versions of the solo seat, one is cut like the stock, the other they say re designed for more comfort.
You might want to do the math again, but my calculations shows Sibenrock was the better value.
Parts are pretty straight forward as to what you need. Your seat latch/lock will transfer from its current position ont he bench seat to the forward position on the solo. A few other bolts and rubber bits will finish it up. SR sells a kit for this.