I have heard in the past that fourth gen exhaust cat back systems cam be modifyed for use on third gen cars. ( USing 1993 parts on a 1991 camaro) If they can be used what should i expect to have to do to make it work i also have a dual cat set up so will that effect anything? Is this the kind of job i a new car guy will be able to do with basic grage tools or should i have it professionaly installed?

And also:
Has any one ever heard of a magnaflow exhaust catback system. I saw they make them for the fourth gen exhaust set up but can they be used on the third gen. I am driving a 1991 Camaro Z-28 with a stock 350 TPI with dual cats. Will it fit?! Also has any one heard about their strait through flowing exhaust mufflers. no baffles or anything, and all of the exhaust flows in the same direction through the muffler. Does any one know how this should effect horse power. they are also all stainless steel systems so they should last for ever , RIght?

Thanks for the suggestions!

 

The only difference in the systems is the way they attach to the catalytic converter. You would need to cut the end of the intermediate pipe off and fabricate some piping to attach to the car. Any exhaust shop should be able to do this.