Need a little help in advance
the LA 318 throttle bracket is mounted on the intake..the intake bolts go in on an angle...the Magnum engines bolts go in vertical...think you might have a problem there...
problem with magnum bracket has it has no provision for kickdown linkage,,,,
AR Engineering has a bunch of brackets...
http://arengineering.com/home-page/throttle-bracket-kits/
but his magnum bracket use the Lokar cable for kickdown linkage...
you might be able to take the stock bracket and bend it to fit...wont cost anything...