Yes.. ive searched.. if ive ovewrlooked something its because im not very good at weeding through the plethera of senseless arguements and vague topic titles.. i have a full obd1 gsr swap just waiting to be put into an eg, i still have the gsr's cat but i have the opportunity to sell it.. can i use the cat from the eg since theyre both OBD1? are they essentially the same part or... Is there a difference in pipe diameter? length? o2 sensor placement? most importantly can i pass bar using the civic cat? thanks