silverbullit02

I have the american thunder cat back system. The question I have is that what kind of mufflers do I have, are they 2 chamber, delta flow, 40s or 50 series? Thanks.

hotrod7687

They are the 40 series 2 chamber. I'm not sure if that kit comes with the originals or the delta flows.

silverbullit02

thanks I bought the system in 2002 if that helps.

hotrod7687

You probably have the originals unless it said somewhere on the kit that it had delta flows. You might check out the flowmaster website to find out for sure.

http://www.flowmastermufflers.com

silverbullit02

thanks

gouldie1903

i got mine with super 40's for my 2001. but i also asked for them. i know if you get it from jegs they come with the super 40's

measure the muffler and match up the dimensions with the muffler specs. i know the super 40's are 5" thick as opposed to 4" thick for the regular 40's. not sure if there is a difference in size between the delta flow and original but it's worth a try.