Just double check the injector fuel line routing on the 93. For some reason I'm thinking the 93 lines cross the top of the manifold and would get in the way of the airbox bolting to the top.
edit: Well, it's not the fuel lines going across the top of the manifold that will be the problem but rather the location on the side of the manifold where they connect to the injector/regulator section. And if you have the stock AIR fittings and hoses on the driver's side they will get in the way. If you still have the AIR stuff you will need to retrofit the 94-97 fittings. Here's a 93 engine for comparison.