the 3rz is only truly a little more work but has much bigger rewards then just going fuel injected 22r. the ref has no idea where the motor came from vehicle or junk yard. The big thing is just make sure everything matches for a certain vehicle if you want your life easy with the swap. As said before is you can swing it find a complete rig rolled or crashed. Store it at a friends or what ever. I just picked up a complete low miles 2000 Tacoma to do my next one for $1300 and had everything plus extras to recoup the cost or buying truck.