I wish I still had my '40 Mercury 'vert'. It had a 59AB block, 3-3/8 over 4 inch crank, Windfield R-2 cam. 2 Stromberg 97 carbs on a Edelbrock intake and a pair of "Denver" heads
I understand that only 529 '40 Merc. verts were built. "Georgia Boy" Robinson(Booze Hauler) built it for me in North Chatt. I was about 17 and of course I tore the car up. Sigh ! Most of the parts came from H.C.