Problem you are going to have is that there are lots of different taps, the breweries made handles and tap flags (the ones that screw on the top of swing taps) for all of them.
You would need to first work out what the Intertap thread is, then look at each handle and see what it needs. There is a very good chance that there wont be an adaptor made for the job.
I have found two part epoxy putty like knead it or similar can get you out of trouble, if you put some keg lube (better yet silicone grease) on the thread, fill the hole in the handle, and shove the tap thread in, there is a pretty good chance you will even be able to unscrew the handle after the putty sets.
Some practice with crappy bolts and bits of pipe or oversize nuts would be a very good idea.
Mark