Originally Posted by Grabber Blue5.0
Well you won't get 20 horsepower that's for sure. And it's the same amount of work as longtubes. Worth it for the money? Not in my opinion.
1) depends on what you want to do some guys are into total horsepower so you'll definitely make more with long tube headers, but at the expense of lower end torque and horsepower.
2) it is not as much work to install short tube as oppose to long tube, unless you are deleting cats. If you need to meet emissions then you will need to use a catted pipe with long tubes and extend o2 sensor harnesses
Just to point out, not all horsepower gains are equal different mods will increase your horsepower but in different rpm ranges, which may not be effective for your application.
I would suggest you look at horsepower/ torque curves to see where hp increases occur.
To me hp @ 7 k rpm is not all that useful.