It should fit assuming you attach all the old EF engine mounts and tranny to the new engine. Wiring would be a big of a nightmare if you wanted to use an HX OBD II ECU (the VTEC-E OBD I engine was in a VX hatchback). You might be able to use a VX OBD I computer with an HX engine and using an pre-OBD to OBD I conversion harness. I guess that brings up the question of why. VTEC-E is neat for gas milage but isn't really a performance design and the simpler D16Z6 SOHC VTEC swap would be easier and faster for probably the same money, maybe less since it's an EG/older engine.