I am doing an engine swap on my 1941 Plymouth coupe, the original flathead six is I believe a 201, could not decipher engine numbers N477 ?? I am installing a D34 230 Dodge flathead six that came out of a Dodge Coronet with a automatic transmission. The original block crank has four studs for the flywheel, the replacement engine crank has eight holes for the original automatic. I cannot figure out what flywheel to get to continue using my 3 speed transmission, current flywheel will not line up with any of the holes, lines up with three , but not four. Any ideas I what I can do ?