Hi Stephen, Between the catalytic converter and the rear muffler.

Hi Joey, Unfortunately, we do not have that data readily available. However, we can fully guarantee this intermediate pipe is a direct fit and specifically designed only for a selected vehicle application only--1998 to 2001 Subaru Impreza, RS 2.5L/2.2L and 1999 to 2002 Subaru Forester, 2.5L. From our homepage, please select your year, make model, submodel and engine size, then click search. Type the name of the part on top where the search box is located. Once the part shows up, that would be a direct fit part and it will be exactly compatible. The dimensions are not noted anymore since you have to accurately selected your vehicle application and the resulting search would show the exact parts designed for that vehicle only.

Hi Lee, Unfortunately, this is not compatible with the 2005 Subaru Impreza RS 4 Cyl 2.5L. For accuracy of fitment, please follow the guidelines below: To check the fitment please use our Vehicle Selector — which can be found towards the top of the homepage as well as all category, search results, and product pages — can help verify if a part will fit your specific application. To enter your application, simply select your vehicle’s year, make, model, sub-model, and engine type and click “Go.” Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page.