Have a look what I did on my thread. $550 full custom. I retained the res after the cat. It sounds good inside. No drone at any speed, medium noise, a lot deeper than stock. Sounds good outside on the beans but definately not loud.

At the time I wanted to save dollars and cents but I just realised I should have gotten the spm dp from dub addiction, for around the $770 mark.

The welding and quality is beautiful and since it is diy easy to fit, and goes on with stock clamps, you can refit the stock dp and sell the spm later on... This option does remove the center res though

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