[Carnut427]

The intake will work just fine on the 428, as they are both low risers. Holley 0-1850 (600cfm) carbs work well. You'll probably want two: COVER – DIAPHRAGM HOUSING (QUICK CHANGE) Part #20-73 2 x 4 bbl. – with balance tube. Expedites changing of vacuum spring. Page 89 of the Holley Avenger Systems catalog. These replace the standard cover on the vacuum secondary unit, making it easier to change secondary springs while tuning. You also install a piece of vacuum line from one secondary unit to the other (this is what the balance tube is for), allowing the vacuum secondary units to open at the same time as long as they have the same spring in them. On the original dual-quad carbs, the linkage hooked up to different places on the throttle plate (the primary higher than the secondary), allowing the front (primary) carb to open first, and the secondary carb would come in as you pressed the pedal down further. Some run both carbs together, as it's a bit of work to make the standard 1850 carbs work progressively, but it can be done. New original-style carbs are available from Holley if you've got the bucks.
Good Luck,

Dan