There were two, slightly different, filter boxes used on the 360's - an early and a late style. Many folks swap out the late style boxes for the early style because the filter elements for the late style are no longer available.
The filters we have are the early style, which have a simple flat sided metal cover that pops over them. The late style filters use a convex shaped two piece box with a smaller rectangular filter that rests inside the box.
A late style bike can be converted to use an early style filter. You'll need both filters, early style covers (used) and requires fabricating a small bracket for the rear bolt to mount to the frame.