M6 V8 Upgrade Path Recommandation

[GAM]

Hello everyone,
Would anyone have a list or link to a page listed suggested performance upgrade (and respective HP gain over stock) path for a stock M6 after so many years of testing.
Coming from a GTR a few years ago and we started with tune only, then tune+downpipes+injectors+pump(e85). Next was turbo upgrades and clutch, next was all the above+built motor...
I would guess the M6 being twin turbo would follow a similar path.
Thank you very much

[mberbic]

-Stage 1 Tune
-Stage 2 Tune, Catless DPs, Gapped Plugs
-Stage 3 Tune, Catless DPs, Gapped Plugs, Meth, Clutch
-Built Motor + all of the above

That's the progression that I have typically seen on this platform.

[Novipec]

Stage 1,5 Tune, 200 cell DPs so the car don´t smell

[GAM]

Thanks guys, what’s the approximate WHP from stock to each stage listed above?
Would you put stage 4 with all the above and pure turbos v2? Then built
Motor for further gain

[Jasoneo5]

Just go BM3 Stage 2 with downpipes. The car then sounds like it should, the smell is only bad on the outside and you're 610whp on 91oct, 640hp on 93....reliably.