This is ripe for a mazda rotary conversion, or even a modern 4 pot
www.ebay.co.uk/itm/NSU-RO80-PROJECT-AND-BULK-LOAD-OF-PARTS-CLASSIC-VW-AUDI-GROUP-ROTARY-ENGINE/282965852257
www.ebay.co.uk/itm/NSU-RO80-PROJECT-AND-BULK-LOAD-OF-PARTS-CLASSIC-VW-AUDI-GROUP-ROTARY-ENGINE/282965852257