If you want more power, you might consider putting a 462 into the BIRD. The cranks can also be offset ground to achieve 500 plus cubic inches.
The cam and crank are MEL specific so you would most likely have to have a current cam regound to performance specs. At one time ISKY offered cams for the MEL. I have heard CROWER can grind a cam for it, but have not researched it yet.
