For my 1983 280zx NA
I was told by a lot of my friends that Magnaflow is a great product. I have been shopping around for mufflers for a while, I looked mostly at HKS and Magnaflow.
Anyways, first this is my situation. I ran over a brick a while back so I need to get my downpipe rebuilt. After I do that then I plan on either fabricating a test pipe or installing a hi-flow cat and using a Magnaflow muffler. I'm going to leave all the pipe in place and just replace the muffler which is falling apart.
First question - When I remove the cat should I use something like this or just weld in a section of pipe?
Second - I am pretty sure the stock exhaust is 2.25 right? If so should I replace the muffler and do the cat removal on it or should I pay way the heck more and get my local shop to do a full custom 2.5? I would prefer to spend less money, also if I do it at a shop then legally they have to put in a cat. Not what I want. Anyways thanks for any input.