Stihl FS 90 Coil

Great site thanks for starting it--- I have an old Stihl FS-90 string line trimmer that belonged to a dear departed friend, it was in my possesion for repair when he died and now belongs to me. It needs an igition module (coil) which Stihl no long supplies so it looks like a used one is my last avenue for getting this thing running again. Do any one in this Stihl forum members have one they would part with or know where I might get one.
Thanks
Sonny