Where did you get the 300SLR crankshaft? I could swear it looks like the very one owned by Jim Wellington from Santa Clara, California (the stand, etc. looks the same). He had a shop that specialized in the old Posche Carrera motors - the ones with the Hirth roller bearing crankshafts and hence his interest in the 300SLR piece. My friend Bill Doyle worked for Jim for a number of years, finally moving on and forming his own business doing the same motors (Rennwagen in Jackson, Wyoming).
Vince Canepa
1967 250SL
113.043-10-001543
568H Signal Red
116 Caviar MB-Tex