how to make a 6.1 spin safely 7500 rpms?

nonono, i already have a Motor from a wrecked 2008 C300. 80,000mls.

I am tearing this engine down want to replace the weakest parts. Maybe i expressed myself wrong. I don't want to race 7,5K rpm for hours. Ist just the peak i want to hit on my few race days on the drag Strip a year.
Means block remains stock. Pistons too? Heads are fine, cam is a crowers, springs are already behive.

I want to use most stock parts as possible because of a chrysler dealership around the Corner. Import from the States will double to triple almost everything....