the factory motor mounts are eliminated when using a plate. less weight and more room for other stuff.

this pic shows the Alterkation mentioned by 7074cuda.
http://static.racingjunk.com/63/ui/2/02/2571131603796.jpg

it's not cheap but makes plenty of room for headers, and dropped 85 lbs off the font end, oil pan choices are greater. it can be ordered with or without motor mounts (i chose without since a plate was to be used). and compared to the old suspenion, it drives like a new car.