spotted these on ebay:
http://cgi.ebay.com.au/vw-004-twinport-alloy-heads-ex-pobjoy-motor_W0QQitemZ200032069993QQihZ010QQcategoryZ72456QQrdZ1QQcmdZViewItem
vwkid ·
Aussieveedubbers · Buying, Selling & Swapping Parts
vw 004 twinport alloy heads ex pobjoy motor(not mine)
https://forums.aussieveedubbers.com/threads/57131/vw-004-twinport-alloy-heads-ex-pobjoy-motornot-mine