Hi Jerry,
What are the difference(s) between the (unmodded) 360 and 362? Did you by chance measure either?
They are *very* modified (
http://forums.audioholics.com/forums/showthread.php?t=56392&highlight=firm)
Is this the heavy mod to the 362?
And then some: but I'm confident that a great deal of improvement can be had by far less modification.
More-better acoustic stuffing would be good, and is easy. Though what was done on mine was complex: improving the bracing of the cabinet (almost always a good idea on towers) can be done at several levels of effort: from the person on here who used wood glue, hocky pucks, and all-thread to make bracing, to opening up the back and rebracing the whole thing.
The bass extension is limited. Not generally a big deal. Easiest is to add as subwoofer (indeed, one solution I've seen Chris do is to pair Primus 152s with custom-built subs).
After stuffing, bracing, and adding a sub (and making sure that the seals are good between the chambers, my next suggestion would be replacing the tweeter... but that requires modifying the crossover.
Since you are in my neck of the woods, you are welcome to come listen: though right now I have some signifigant room-interaction issues to fix on them.