lol im a combat engineer in the usmc. i just find ieds and blow stuff up. no college degree here

ok if your an engineer could you help me i have a 88 toyota 4x4 but when i got it the people said it had a 22re in it. we only paid 1200 so we got what we paid, my question is it has 1979 20r motor how would i swiich the wiring and mounting back to 22r or 22re.and where can i find the cheapest 22r carburated motor?