E-Body bucket seats in A-body

70 a/b/e seat frames are same . foam & cushions different , tracks on e body are shortest height wise , a body are @ least 3/4-1 inch taller than e body tracks , b body are much taller than both . just shim them where they are most comfortable for your height & replace studs in tracks . swapping the tracks will be pricey using oem stuff unless youve got em already . get some lexan cutoffs from a local glass shop or plastic shop & make your own spacers , polycarbonate is easy to work with & wont compress.