[TurboKraft]

Thankfully, the 930 CVs were so strong that they became the default CV setup in the off-road world, and those vehicles put them through hell with odd angles, shock loading, and often far more torque than our cars make. And it's a big market. Consequently there are more available options out there than you can imagine: cryo-treated, polished, and DLC coated? Available.
And the inner flange that the boot fits over: available, stamped or billet.
And the boots: multiple versions available, incl. multirib accordion-looking ones that are still pliable after 3 race seasons.
No, they aren't Genuine Porsche.
They're better.