Is there an object which performs a 'destructive' varispeed operation on a buffer similar to 

So instead of using the ztx algorithm or any other FFT based method , it applies the classic tape style speed-up/down process.

I know it's easy to play back audio from a buffer in this way but I'm looking for an object or method which operates on a buffer destructively (and doesn't need to copy the new audio into another buffer with a different name).

Is there an object which performs a 'destructive' varispeed operation on a buffer similar to stretch~ ?

So instead of using the ztx algorithm or any other FFT based method , it applies the classic tape style speed-up/down process.

I know it's easy to play back audio from a buffer in this way but I'm looking for an object or method which operates on a buffer destructively (and doesn't need to copy the new audio into another buffer with a different name).

Is there an object which performs a 'destructive' varispeed operation on a buffer similar to stretch~ ?
So instead of using the ztx ... 

Varispeed time & pitch operation on a buffer similar to stretch~ ?