I am building a 6 pack induction system, and was looking at the Holley polished carbs.
30683 and 30684 part numbers.
My question is with fitment on the 6bbl intake...these carbs say chevy, and are a different part number than the mopar carbs.

Anybody know if I will have some issues with fitment?
Thanks,

Plenty, the fuel inlets are on the wrong side for starters. You can run them on a Mopar but it's going to take some non Mopar fuel lines and other associated linkage parts. My advice? find some Mopar versions and save yourself the headaches.

A few things, Those carbs are mechanical not vacuum, fuel inlet on the drivers side I believe and chevy linkage. Will bolt up to six pack intake and can be made to work.

The outer carbs have metering blocks instead of metering plates. The rear one will not fit on a mopar intake unless you change to a side hung float bowl.

They are similar to these old Direct Connection mechanical secondary carbs other than the bowls and all have accelerator pumps.

Here is the outer carb. Bowl will not work on rear carb. Also venturi and throttle bore are smaller than mopar type carbs. Booster is also the type commonly found in smaller carbs. Hmm, it has an air horn that might interfere with a mopar aircleaner lid. Center carb linkage will not be compatible with mopar throttle pressure linkage. These are not at all the same as the 4782/4783 aftermarket mechanicals pictured above.

Uh, yeah....what these guys said. Find some Mopar carbs.