I was out junk yarding it in the toyota wreks when i just happened to lift the valve cover of a 22r and saw it had a dual timing chain???,, could it be a 20 r? i know its a r do to the intake still on it , but it had bucket seats in great shape and for 52 $$$ there in my shop now awaiting to replace the bench,

 

i think the 81-82 22r's had them

 

my 81 with the 22r has dual TC.

 

Changed in 84

 

Yes, 1981, 82 and 83....