I haven’t really thought about that. I was planning on getting a solo seat so I never looking in to doing that. After finding a solo seat, shipping, and the Memory Foam Modification the Mean City Cycle seat conversion would cost me about the same as the other two options. So now I guess out of the three what would be the most comfortable? I have read on here that a lot of people really like the Mustang seats but haven’t seen much on Mean City Cycle conversions or those with gel inserts.