Because of my standard and profits,is too expensive to provide 300-400 pounds for the 4-2-1 exhaust manifold,so i am planing to rework original manifold from 4-1 in the 4-2-1,will it be any differences?
I know that the difference lies in the fact that the original four pipes are 40 mm and the magnex or maniflow are 45 mm ....
What are you thinking about that ? with 4-2-1 manifold you get midl range power as far as I know....
Maybe is my idea stupid but is a very cheap solution....

In my case not,because i have pipes,welding and bending for free