Howdy. Been a minute.
I'm wanting to swap the euro spec exhaust from my Evo II with a USA one at least temporarily. It's time to re-up my tags and The EU one won't pass the sniff test in my state but based on previous experience the USA one will. Last time I did the tags we swapped a USA one and it passed easily but it is back to having the EU exhaust on now.
Previously I had a shop do the work for me but this time I decided to do it myself. I have the stock exhaust off and I have the majority of a stock USA E30 M3 exhaust here but it is missing the back section / muffler.
So my question is how best to complete the exhaust. Should I:
1. Source a brand new USA spec exhaust or at least a used complete exhaust?
2. Have the partial USA spec exhaust that I have completed somehow (with what parts and at what sort of shop?).
3. Other idea?
Interestingly the two exhausts look visually almost identical but I guess the interior catalytic converter components would be different? I was under the impression that the EVO exhaust had fewer or no cats at all?
Also: Since the Evo II exhaust / muffler is super rare does it make any sense to refresh / re-coat it while it is out or does that ruin the originality of it?
ALSO: what do the clamps do right before the muffler box?
ALSO it looks like the USA exhaust was cut, so I'm guessing it would need to be welded to the remaining pipe / muffler? Or is that what those clamps do?

I'm wanting to swap the euro spec exhaust from my Evo II with a USA one at least temporarily. It's time to re-up my tags and The EU one won't pass the sniff test in my state but based on previous experience the USA one will. Last time I did the tags we swapped a USA one and it passed easily but it is back to having the EU exhaust on now.
Previously I had a shop do the work for me but this time I decided to do it myself. I have the stock exhaust off and I have the majority of a stock USA E30 M3 exhaust here but it is missing the back section / muffler.
So my question is how best to complete the exhaust. Should I:
1. Source a brand new USA spec exhaust or at least a used complete exhaust?
2. Have the partial USA spec exhaust that I have completed somehow (with what parts and at what sort of shop?).
3. Other idea?
Interestingly the two exhausts look visually almost identical but I guess the interior catalytic converter components would be different? I was under the impression that the EVO exhaust had fewer or no cats at all?
Also: Since the Evo II exhaust / muffler is super rare does it make any sense to refresh / re-coat it while it is out or does that ruin the originality of it?
ALSO: what do the clamps do right before the muffler box?
ALSO it looks like the USA exhaust was cut, so I'm guessing it would need to be welded to the remaining pipe / muffler? Or is that what those clamps do?
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