The seller won’t measure the spindle for me so probably not worth the risk as I wouldn’t be able to return.
Looking at a new Dub version now, that seems to get over the problem
I had a look. SRAM-Quarq cranks are BB30 and Bb386 compatible. For Bb386 you need a long spindle as it's an 86.5mm shell, exactly what you get with a BSA shell + external cups.
@Netakure started
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The seller won’t measure the spindle for me so probably not worth the risk as I wouldn’t be able to return.
Looking at a new Dub version now, that seems to get over the problem