I am in the process of installing a 1/2vw on my q1.  The biggest job was creating the cowling.  The 1/2vw engine mounts were easy.  This is where I left off this spring.  I will return to the project this winter.  I finished my sonerai this summer.  I have split lines created in my mold so I can layup top and bottom cowling plus checks individually in the mold to create fitted parts with flanges.  I flew this airplane with the Onan last summer and fall.