Anyone know how to tell the differece between the two just by looking? According to product sites, there is a differece (different product id number) but I haven't been able to find out how to tell by just looking. I can get a good deal on a slightly used one but the shop I'm buying it form doesn't know if it came off of an SH or base model. Can anyone help me out?

 

The only difference is the length of the pipe connecting to the cat.

 

Does that mean the SH version is longer?