Hello all, Thanks for letting me join your forum. My names Ray and have been lurking for a while. I recently bought a 1937 pp .32 and a 1975 ppk/s .22. The pp is a little rough around the edges but a great shooter. The ppk/s .22 is in great condition and a great shooter also. the ppk/s .22 has the grips with the thumb rest on left side id like to change. What is the differences in the pp-ppk/s frames of this vintage as far as grips go? Is a PPK/s .22 frame different from a .32or .380? Thanks again, Ray