AUDI 3A BUBBLE BLOCK WANTED !!

Hi, im looking to build a 2.1 8v engine and I am having trouble finding a 3a block/engine.
Anyone that may have one or know where I may find one, please get in touch !
I would prefer it to be down south but could travel if needed.
Also interested in any other spare parts that may help with this build !
Thanks for reading !!