I have a 2006 race bike and a new 2008 R. The race bike had the comfy standard seat on and the R the not so comfy R seat. Seemed obvious to me to swap them over.
Not much of a job and for each bike you need everything from the tank backwards. An easy job and took around 40mins for each bike.
Only thing I had to do was solder a couple of wires for the rear light plug as they were different. I think if you got the stock 08 rear light the plugs would be the same.
Here they are, dunno why one pic is blurry I'll sort it later when out on the bike

Not much of a job and for each bike you need everything from the tank backwards. An easy job and took around 40mins for each bike.
Only thing I had to do was solder a couple of wires for the rear light plug as they were different. I think if you got the stock 08 rear light the plugs would be the same.
Here they are, dunno why one pic is blurry I'll sort it later when out on the bike