The arms on my '91 and '94 are the same arms that are on my '98.
:read:
The 95 and up arm's have a lightly different bend and they have a stiffer spring so that they don't hop and skip on the windshield as much as the 88-94's do, I also swap them out anytime I habe bought a 94 and down 400.
They're a different design. The spline is still the same though. Made a world of difference on mine, along with 22" Bosch Icons.