Keep in mind that the pipe tapering a little bit is not going to diminish performance, i mean look at the AMS LICP. They run theirs on their cars, and their cars are terribly fast. Faster than you could imagine.....

AMS and Buschur are on the forefront of technology when it comes to EVO products. If a slight taper was detrimental I would not think that AMS would incorporate it into their pipe. Just my $.02

 

This was my approach, I know Bucshur racing is the bomb, But its just a 2.5 inch steel pipe, So I wanted to find the cheapest 2.5 inch PIPE, and Nisei fits that description.

Thats all,
Ive already made my mind up- Thanks guys