I want to know the difference between these hooker catbacks. One part # is 520-16820 (non ho) some guy at jegs told me that it was for if u had 2 cats. The other is 520-16822 (G,F,and 7)code, does it really make a big difference which catback u get, is one a 2.5 or will they all fit my 82 305 I will be running with no cat anyways? which one do u recommend getting?

------------------
I Love Smokin Tires
(stangs fear me)

 

all 3 inch intermediate with dual 2.5 inch tail pipes. Only difference is the way that they hook up to the stock converter, at least that is what i have heard.
Im going to put the system for the z28's and IROCs on next weekend and i know that i am going to have to modify my Catco slip fit converter to fit the intermediate because they are made to fit the stock converter flanges.
Do some research on this board, youll be amazed at what youll find, anything and almost everything you want to know is here.