That is a piece of lower tin - it goes to the left and just below the pulley end, as you're looking at the engine from the back of the van. If you look, it bolts onto a couple of holes at the edge of the cylinder tin, and through the breastplate tin too, I think.
Which bits number 38 as theres no numbering in that pic lol Im missing all the flaps and thermostat stuff off mine
no.38 is the bottom pulley nut cover... not many people will have that, as it was mainly used on bugs or EBs
right, so it goes just behind the funny little pipe that draws heat of the cylinder head on the right hand side (looking at the back of the engine) and there is only one of them and not two? thanks for all your help dudes