A few threads ago "The Kid" and I went back and forth on this issue.
I have Brembo cross drilled and slotted rotors with performance pads and factory calipers. I don't have the Tundra upgrade.
I have not had any problems yet and can achieve maximum stoppage - I say that because tires will shred.
I assume the Tundra upgrade is as good or better.
After listening to what others have had to say on this issue, I have gathered that most of the advice against slotted/drilled rotors has to do with longevity. I only have 40,000 on my rotors but they have held up so far.
If you do consider that route, be sure to get the highest quality (aka Brembo) steel possible. I think if you do the Tundra upgrade then you might be fine with NAPA parts since so many here have used them without issue.
:bat: