move your rear springs to the front, and find a set of chevy 1/2 ton leaf springs(63in. long) for the back.  it'll give you good flex, move your front axle forward, and and lift all at the same time.  not sure how the stock steering would work with that though.  might have to upgrade to high steer.
also try the airbox off a 3.slow v6.  supposed to flow better.