I have a B17 with AEM CAI and DC 4-2-1 1 Piece Header.

I just bought the header and the guy told me it was 2.5 inch collector.

My dilemma is that thinking it was 2.5 inches, I order a 2.5 Carsound Catalytic Converter and a 2.5 inch Magnaflow Resonator and a 2.5 inch ES Technical Roadsports Muffler.

I was orginally going to get custom 2.5 inch mandrel bent tubing done.

But now I'm thinking to just get 2.5 inch crushed bent tubing because its cheaper and easy to get done.

My question is, do you think that the whole 2.5 inch setup will be ok? I should have order the 2.25 or even stuck with the 2 inch setup. But since I've already bought all the parts, should I just keep them, or try and sell them and re order new parts in the right size?


** I do plan this summer to rebuild my motor and possible stick N/A with a high compression 200 whp goal for my motor, so should I just keep this setup?

 

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2.5 inch full exhaust too big?

would using 2.25 inch piping with my 2.5 inch res and cat and muffler be ok?

or just stick to 2.5 inch crush bent tubing?