[eckoman_pdx]

In order for a swap to be legel, the motor has to be newer than the chassis of the vehicle. Your civic is a 94 civic, therefor your motor you swap in needs to be 94 or newer (same year or newer than vehicle chassis). Your 96 GSR motor is fine in this regard.

Okay, the motor your swapping in is an OBD-II motor. You must keep ALL the sensors intact and in the proper place, even if they are not used. You'll need to add air intake bypass wiring. The radiator hose you'll use is a upper 94 GSR radiator hose and for the lower hose you'll use a 94 Del Sol Vtec one. If you want AC, you'll use a 94-95 Del Sol Vtec AC bracket. You'll end up having to convert the motor to OBD-I. For the ecu you can either convert the motor to OBD-I (still keepig the unused sensors intact), backdating the electronics and usin an OBD-I ecu, or you can use an OBD-II ecu, ut you'll have to use the proper adapter harness or make the proper (and in-depth) wiring modifications. Typically an adapter harness cuts down on issues if going this route. If you can, since your car is an OBD-I vehicle, I suggest going the OBD-I ECU route, it's less complex. Remember, all the unused OBD-II sensors have to be intact still!!!

As was mentioned about radiators, your stock one will work fine. However, you can upgrade to a Del Sol Vtec radiator is thicker than your stock one. If you don't want that one but want to upgrade, opt for a very thick core radiator like Koyo or Fluidyne (Fluidyne has 38mm cores I believe, some of the Koyos have upwards of 53mm cores).

Also, some 96+ motors need to have the brackets under the timing belt and on the rear of the motor changed to the ones from the apporeriate year.