Advise required

hello there

I'm thinking of installing an K& N Aircharger Off-road Air intake Kit and a BORLA Split-Rear Exit Cat -Back System on my 2005 Armada LE.
They say it will increase HP by 26 and Torque by30lbs in total.
Does anybody have a similar system or would you recommend a different system.
Any comments will be appreciated,
Thank you
Stephen