440 motor mounts
The elephant ears make for a rougher ride due to vibration. I once saw a racer who addressed THAT problem by cutting a large hole in the bottom of the ears and pressing in UPPER CONTROL ARM BUSHINGS! He welded two pieces of angle iron to the frame rails and ran a bolt through the ears and the brackets and the UCA bushings and he had unbreakable rubber insulated motor plates!
Another clever idea with elephant ears is to mill the water pump housing exactly the same thickness as the motor plate (which bolts between the water pump housing and the block). When you cut down the water pump housing and then put in the plate, all the pulleys line up like they did on the stock motor!