Any cat out of a pickup will do High flow. That'* what mine is. A high flow performance cat for a 350.

Yeah, it works well, especially for emissions, but I wonder if mine is hurting performance? :?

edit: When I got the car, it had to be emissions tested. It failed miserably. Checked out the cat - the thing was hollow... Either something went horribly wrong, or the previous owner gutted it out.

wow, you're the last person on here that i would've guessed had never been to the strip

actually i dont think the sound system would hurt his mods to much. I had 2 10'* in a custom made trunk box and about the biggest amp u ever saw, 6x9'* and plenty of tools in the trunk all the time. It would crush mid 17 second cars, ide be 2-3 cars ahead an still pulling by 30mph. My friend has a 89 turbo minivan that is decently modded, it runs 16.6'* at the track. IT will get 2-3 cars on me at launch but i'll have it all made up by top of first gear and start pull a car on it till 80mph. W/ the trunk cleared out though i usually got atleast 2 cars by 60. Pretty slow but for being 14 years old, its not to terrible.
the system will have a negative effect but every extra 100lbs is about an extra 10th of a second right?