Afaik there never were any Gerbers for the parallel-outputs version, only pcb artwork: https://www.diyaudio.com/forums/newreply.php?do=newreply&p=4401423
tea-bag's Sony VFET AL would be your best option, yup
GB Pass SONY VFET Version 2 - AL Boards by Tea-Bag
tea-bag's Sony VFET AL would be your best option, yup
GB Pass SONY VFET Version 2 - AL Boards by Tea-Bag