I have a 440, whiplash 440 cam, factory build engine, no fancy balancing at all, tunnel ram 660's, and am using the front plate from Mancini (member here makes them) and stock rubber mount on trans. There are no shakes, vibrations, etc. Street use only. I used a water pump gasket on both sides of the plate with some Right Stuff on both sides of each gasket. One thing that made it all very nice is using studs for the water pump/engine plate. I am very happy with this setup.
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