Joomla Users need same ID in 2 sites

I Have 2 joomla websites, Lets call these Site A & Site B I use a Joomla component called SYNK, that synchronizes the users between the 2 sites, so each site has the exact same amount of users, with same names, usernames. The user ID's though are different in both sites and I need All the users in Site A to stay the same, but all the users in Site B to be modified in the databse to have the same Joomla ID as Site A There are around 1000 users. I Know I can do this manually by entering into PHP my Admin from cPanel and just alter all the ID's for the user in Site B to match that in site A, but dont have the time to do it. So at the end of the task all the users will stay the same, but both have the same ID's as ins Site A. I Need this done ASAP - today preferably.