I'd like to replace my 2 piece seat with somethin a bit more conventionally designed. The rider portion has me quite locked in with no wiggle room. While the passenger seat is quite long and unused. I need to keep the low riding position and be able to stretch out a bit. Would a seat from another BMW with better ergonomics fit? Or other suggestions please?

I like the look and design of the R1100S seat does anyone know or think the pan would or could be adapted??