What are all the modifications you have to make to drop a B18C5 engine in a 98 civic ex including parts you need to put in excluding the engine and tranny of course and parts you need to take out etc?

To drop a B18C5 engine into a 98 Civic EX, you’ll need to modify the engine mounts, requiring either OEM or aftermarket mounts specific for the B-series swap. You'll also need to replace the stock front and rear motor mounts, and potentially the passenger side mount. Additionally, you will require a compatible ECU (like P72 or Hondata), a custom exhaust system, and modifications to the wiring harness for proper connections. Lastly, remove the factory intake and exhaust components to accommodate the new engine setup.