But ultimately to maintain good flow as well as back pressure use a H pipe or X pipe .

In the older 350's it my experince that helped when i used a H pipe.....You do realize Cherry bomb does still carry and make those glaspacks.....but they also make great performance mufflers that have a good sound .....and add a little "Tone"..which is what i like and preferr....I dont want it outragously loud.....Just want to hear it when u hit that LOUD pedal...... like magnaflows.....

 

I passed the sniffer test with out a cat when I satationed out there.but that was about 12 years ago.I couldn't tell you the what the laws are now.

 

Well in cali its a yearly smog, every time you renew. And they seem pretty good at catching it now, im fairly confident I would be able to do it I just don't know what pieces I would use to connect the headers to the cat down under the passenger side. I assume there is a price to accomplished that but I can't find.one

 

You might be able to run a set of magnaflow cats after the headers.But I would get rid of the stock cat it's way too small an restrictive an wont be usable with headers