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I was told that you could use standerd LA heads and stock rockers & shaft without doing any drilling. I was going to use a magnum block with it's roller cam & lifters in my 87 dakota because of the motor mounts issue and the LA intake is cheaper and I can run factory A/C and all the brackets. Also if I do the cov. what push rods I use?

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Push rods will be determined by the springs... if
you have strong springs and high ratio rockers you
need bigger PRs... at least wall thickness or diameter...
larger diameter is lighter with equal strength...
so when you figure out what you will run then talk to
the PR company