I have finally talked myself into buying a set of dynatech longtubes. my question is whether or not the Y pipe and high flow cats are also a wise purchase.

are there extra incredible gains to going the extra five miles and having a "true dual" setup fabricated at a shop?

I'd kinda like to just be able to order and bolt up and drive.... but i dont want to buy something that i'm going to be sorry about in the future.

thanks for the input.

2007 sc lariat 5.4L

 

could somebody please explain to me how much difference a full set of dynatech longtubes + cats, Y pipe and aftermarket exhaust would differ from

longtubes + cats + x or H pipe + 2 aftermarket mufflers?

I would love to not to have this whole thing fabricated if its not a noticable difference.

thanks.