Hydro boost upgrade

[Wings720]

Hey I have a 2003 GMC Denali (Awd 6.0). It currently has completely stock brakes.

I bought the bigger rotors and the ‘07 tahoe calipers for the front.

My hydro boost is currently leaking.
Should I buy anther ‘03 hydro boost or can I swap in a 2011 hydro boost and master cylinder ?

If not a 2011 what other options do I have as far as a better hydro boost unit?

Also should I run all stainless steel lines while I have the whole brake system disconnected? I ordered new rubber hoses for the front.

TYIA.

Bonus content; I want to get a tune and change my exhaust. If I were to cut out the cats hypothetically; would this increase fuel mileage? How would I get the Check engine lights to turn off?

 

[Wings720]

Halp please

 

[mikeseay]

Halp please

Don’t know much about the hydro boost, mine has the upgraded brakes up front and stainless lines and they have always worked fine. It does stop a little better then before. The hydro boost works fine.
Cutting the cats and getting a tune will make it much more responsive and really good highway driving. Your exhaust with stock mufflers will sound a lot better also. My 05 Denali has 2 pipes going in and 2 pipes coming out, I thought about swapping it out but after driving it I decided to leave it alone.
Good luck