This particular carbon shroud is actually from one of the first complete Remmele engines that he build and the picture of this (2,7) engine is the one that is still on his site.
That was before he had acces to his type 4-type 1 heads, so its a long time back...about 7 years.
Development of cooling shrouds is very old in germany by now. The old Käfer cup series made for a lot of development in type 4 durability for track racing back in those days (late 80's and early 90's). You may not know the half of it Jake, but thats ok, as you have initiated new interest for the type 4 and made your own new products, which is excellent for us T4 enthousiasts