what block are you using?as to intake you will need a intake for tall deck bbc OR if already have a intake for std. deck bbc then you can use it by using intake spacers.the dist also needs to be for tall deck or one with adjustable collar..on lifters they need to be .300 taller on my dart block[10.20deck]according again to what block you are using.check your cam location..on the dart big M block[as i have]they are in stock location but i've heard of some block having cam raised.if a dart[as i have]then you use std gear drive or timing chain or belt drive for any bbc mark iv's..