Hello all, I need to swap an M46 into my current project car, a '91 240 SE with a B230FT from a '92 940. I am running the stock LH 2.4 so I need a flywheel with the windows for the crank sensor. There is a '90 240 with M47 in the bone yard near here. My question is, is the flywheel from the '90 240 M47 the same as the one in the later 740 turbos with a stepped flywheel? Thanks for your input. B.G.