'95 Civic EX Motor Swap

I have a '95 Civic with a D16z6 motor that i wanna swap out what motor is the least amount of modifications yet give me a good upgrade in HP and Torque? I am expecting to swap tranny, motor, ecu, maybe some wiring, and maybe axles and shift linkage. I am new to the swapping idea yet am rdy to do a big upgrade. I have the tools and equipment to do it i just wanna be prepared. Thanks for the input.