Yes, the description boils my ****:
Fully polished and ported for maximum performance
Increases torque and horse power over the entire RPM range
Increase your spool up speed and improve your throttle response
Guaranteed BHP improvement
To be fair it probably wont last a million years but at that price, just be conscious that it might need a little tweak when fitting.
At that price it's worth a go to be fair!! It won't be amazing quality but it should do the trick!