[jwade944]

Tom Pultz posted this information on Rennlist in 1998:

3 white dots indicate a spring with part no 951 343 531 00, which is a 944S with standard shock absorbers. It has the following properties:

Spring rate 21.8 N/mm.
Wire diameter 12.0 mm.
Free length 407 mm
Spring force 3445 3535 N at 251 mm compression (highest tolerance group)

2 yellow dots indicate a spring with part no 951 343 531 01, which is a 944S with M474 Sport (gas) shock absorbers OR 944 Turbo up to MY '88 with standard and sport type shock absorbers. Properties are:

Spring rate 21.8 N/mm.
Wire diameter 12.0 mm.
Free length 396 mm
Spring force 3118 3202 N at 251 mm compression (mid tolerance group)

The two springs have the SAME nominal spring rate, but the M474 spring is shorter and actually has less spring force at the same compression distance.

Not what you wanted to hear, but I hope this helps.