I have a 1998 F-150 with a 4.6 v-8. One of my catalytic converters is making a rattling sound. Where is the best place to purchase catalytic converters?. Thanks. Chief Mike.

 

Either summitracing.com or jegs.com.

 

http://performancepeddler.com

list price is 67.oo but you can probaly get it for 55-60 bucks

 

It depends on if you want stock cats or hi-flow cats. Hi-flow cats are cheaper, provide increased volume, and support more power. Stock cats are ungodly expensive, and kill the overall sound of the exhaust.

Magnaflow makes a really good set, but they are not a direct bolt-in kit. Performancepeddler.com with the code "clubgp" have the best price on them.