i gave my cousin my 3 inch si/so that fits on my 2000 ram , go too look under his 98 and its a di/so cat !! how gay, what can he do to make it fit and what the part number for the di/so highflow cat ?? i forget what years it changed to the si/so ??

 

I think it was 2000 model year that they changed.

http://www.summitracing.com/parts/MPE-23285/

Is that the one you are looking for?

I have one that showed up 2 days ago from Summit.
I was going to ship it back to them for a refund but if you want it I will sell it for the same price.

 

mine is a 94 and it was a duel in single out, not sure what makes them differ between years or why.

 

no im looking for a universal

 

http://www.summitracing.com/parts/MPE-10748/

With one of these
http://www.summitracing.com/parts/WLK-41973/

and 2 of these
http://www.summitracing.com/parts/SUM-G2990/

then you could use that 3 inch one

 

Just get a y pipe that ends in a 3in and might need an adaptor to put on the stock pipe not sure what size it is

 

They switched it around the 2000 model year. The larger exhaust enabled them to claim an extra 5 HP at the crank, or something along those lines.