I’ve been researching this for a few weeks. The Lucas distributors were listed in the Lucas catalogs by their engine driven direction. That would be clockwise for a Scott, however the rotor spins counter clock wise when viewed spinning the engine over and watching the rotor turn. See this ebay listing( not all Scott distributor stuff) . The correct Lucas rotor number for a Scott is #400051 , and it shows the its direction , by an arrow as counter clock wise. I just bought an cap off ebay for the Lucas distrib, # 400136.
https://www.ebay.com/itm/190999709369?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
