Yup, it's possible to change the whole instrument cluster. IIRC,
for the S13, there should even be a Nismo speedo for the S13,
though it will not be easy to find nowadays..
In addition, parts for the CA18DE will not be easy to find
also.. Think maintanence may be quite jialat 
Hmm.. I know that the SR20DET can be fitted into the s13.. But,
is it even legal? And from what i know, that is the same 2 litre
engine used in the s15 right?
CA18DE no power.. only the SR20DET will make s13 fly..
