Craig- The only true way to identify the correct shocks for your 47 is to look at the round cap on the end of the body of the shock. For the right rear shock the number stamped there should be 1754 N and left should be 1754 P. The casting number should be 5313843 which will be on the body of the shock, under the casting number it will say Made in Dayton Ohio USA. I have a used set from a 46 which states all the numbers from above plus the R-14 after the casting number for the right shock and R-7 on the left shock. If you find the 1754 N or 1754 P this would be correct for your car. These numbers 1754 N or P were used from 41-47 for all 41 60s,61,41-62,42-60s,61,62,63, 46-60s,61,62 and 47 60s, 61, and 62.Call me if I can help.