New to 5.7 L I want a min 260kw but would like 300kw ?

[Detroit]

Thanks, not a abba fan, I'm thinking of buying headers and high flow metal cats and fab the rest, thinking I will build like this; 3" inlet & 3" outlet cats installed directly to headers, then 3" cross over pipe, then 2.5" diff bends, then resonator.

I can get 2 cats shipped from USA for about $400.00, I just have to source a set of headers. And I'll make the rest including 3" cross over section.

 

[Not_An_Abba_Fan]

I do metallic high flow cats for $190 each. The extractors I do for $740. $55 shipping to get it all to Brisbane.

I have done a similar system, and I found the X pipe to restict flow a bit in the upper revs when it is close to the headers. I moved it back where the front mufflers would be and it went a lot better.

 

[Detroit]

Awesome , if they are 3" inlet & outlet 100 cell cats I will PM u when I'm ready to buy, good prices and thanks for info.


I do metallic high flow cats for $190 each. The extractors I do for $740. $55 shipping to get it all to Brisbane.

I have done a similar system, and I found the X pipe to restict flow a bit in the upper revs when it is close to the headers. I moved it back where the front mufflers would be and it went a lot better.