Nikon RFThis forum is dedicated to Nikon Rangefinders: the Nikon One, Nikon M, Nikon S, Nikon S2, Nikon SP, Nikon S3, Nikon S4, and Nikon S3M, Nikon S3 2000, Nikon SP 2005. Plus the ONLY production camera ever made in Nikon Rangefinder mount WITH TTL metering ... the Voigtlander Bessa R2S.
I think the Nikon F shutter is identical to the SP shutter and so many parts interchange. The S2 is earlier and I have only heard of titanium shutter curtains from an F being put in an S2 altho there may be other parts that would fit. Outer body parts are quite different.