I have a monoposto and would like for it to be a biposto. I asked a technician at my local dealership and he said that I will need a new subframe and new seat. Is this the only way to do the conversion?
There are a lot of threads regarding this topic. just conduct a quick search to find them.
If you were in the North East, I would have swapped bikes with you. I have an '07 Biposto, but because of my newly track addiction, wished I had a mono...
you two could swap swingarm, seat and peg/rearset assemblies and exhaust - those are the differences.
you can even just put on a set of 07 pillion peg/triangles and an 07 exhaust and leave the swingarm if you wanted. the seats interchange - may need to fiddle with/shim the latch a little to get it adjusted as the full seats (bip/gt) use some metal loops that engage hooks on the top of the frame which are slightly different than the mono seat - but it's not a big deal, i did it on mine.