Yes of course, all you need is a pre 73 heater valve and a reducer hose. You can buy the hose on eBay for less than $10. The in/outlet diameter of 72 valve is smaller than 73-76 so you'd need the reducer. If you're planning to pull the box out then do proper restoration. There are some useful tips & tutorials here but my only tip is to take photos of each step and bag/mark items accordingly so you can reverse the project for assembly. Remember, same heater box was installed in RHD cars so it's easy to get confused at re-assembly because rods and cables are installed the other way around. So just because it looks right, it doesn't mean it is! Cheers