No apology needed, this is what I asked for when I started this thread ‘modest upgrades to a R10’. I hadn’t considered supercharging so I am glad you jumped in, really interesting reading and I would be keen to try it. Seem to remember supercharging was popular as a after market on earlier Renaults ,4cv and Dauphine ?
You mentioned draw through set ups are easier to manage than push through. How would you set this up on a downdraft like the Weber 32 dir without having it coming up through the engine lid. Supercharger between inlet manifold and head? Or is it easier just to use an Su?