The 22r needs to be a certain year model before the e.f.i. will bolt up to the head. If you 22r in your truck is a 82 then your out of luck on using that engine. You can switch the head with celica e.f.i. head they were e.f.i. in 83. Other then that the wiring won't be that hard. Just get you a e.w.d. I wanted to the same thing had a 93 cab and e.f.i. set up but a 82 engine. I'm just going to order the propane kit from gotpropane and run propane.