Here is what you do, If you are looking for a direct replacement. This is the least amount of wiring and easiest way to do it. You won't get that much more power. The engine will bolt up to your transmission which has 3 out of 4 motor mounts. You use the same axles. Off of your existing engine you will need to take off the mount from the engine right by the timing belt and get the L bracket from it. You will also need one of the two sensors on the back of the engine that are in the engine block. (do a search on here or on google for putting a z6 engine into an 88-91 civic. It will basicially be the same except you won't be hooking up vtec) For the not having to change any wiring method, you will have to use your intake manifold off of your current engine, the distributor, and the o2 sensor. (I did this swap with the z6 engine over 2 years ago so I could be forgetting stuff. I put the z6 into my 91 civic dx and used the dpfi manifold for a few months until I had the time to do the mpfi swap which is well worth it). The intake manifold will bolt right up. The distrbutor will have to be afroengineered. When you are looking up sites for the z6 sites into a civic there should be pictures of where you have to notch the distributor. If you want one that it already cut for this pm me, I am talking like ten bucks plus 5 to ship. I will see you it really cheap as I have no room for it. You would have to check the timing on it and may have to notch it a little to adjust the timing.
