Referee Inspection!

From what I remember being a smog tech. You want make sure you have the EO/Carb numbers visible on the part(s) and i think they go off what year your new enigne is not the car so if you have ie. a 96 engine in an 84 vehicle you have to go off the 96 emissions and all the emissions equipment with that year of enigne. But you cant use anything older than an 84. My old stall mate put a 5 liter in a old toyota 4 runner but didnt pass since the headers didnt have and EO/Carb number stamped into it. Hope this helps

Roger