So I need to replace the engine in my 91 accord 5 speed. I'm just a little confused after trying to do some research. Easiest is obviously another f22a. I can get the F22B SOHC non-vtec for about $200 cheaper. I can also get the F22B DOHC Non-vtec cheaper then the f22a. I might consider a little more money and put in the F22B1 Vtec, but how difficult is it? I'm not overally concerned about power, just want my car. My question is this, what would I need for each one(ie. ecu? wiring? what car would I order the parts under?). I've come up with this so far F22A Car: 90-93 Accord Needed: Nothing F22B1 Car: 94-97 Accord EX Needed: ECU, VTEC Solenoid, wiring etc. F22B DOHC Non-Vtec Car: Japanese Prelude? Needed: ecu??? F22B SOHC Non-Vtec Car: 94-97 accord lx? dx????? Needed: ECU??? F23A Vtec Car: ??? Needed: ??? F20A SOHC Car: 90-93 Accord in Japan? Needed: Nothing? If the F22B SOHC Non-VTEC is an easy swap I will just do it, as it is my cheapest one. I'm just not sure what is involved in each one. How hard is it to hook everything up for the F22B2.