You can read thru the threads and find out what extra might be needed to make them fit the air cleaner or if there is a clearance problem somewhere. There have been a few that have made the change and whether it solved all the problems is unknown. There are many using the stock carbs without issue.
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=175943