I just bought a 90 civic dx from a friend for $300, I was wondering what would be the best cheap way to get more power out of the engine or should I do a head swap or complete motor swap, turbo it? The motor only has around 80k on a rebuild and runs great so it is kind of a waste to get rid of it, but I do not want to dump a bunch of money into it. Thanks

 

Please do some research, this is a very popular question that has been covered many times.