Subject: solo seat for 70 ambo

I am interested in getting a solo seat for my 70 ambo. Does anyone have
any recommendations? I saw one on the MG Cycle site - a repro sprung
seat. Can this be mounted on a civilian ambo? I also saw that harper's
has seats listed on their websites. Unfortunately, I don't care for the
style with the many rows of stitching that run across the seat, as
pictured on their site. Thanks!