I've been searching everywhere and dug up some old threads dating 2014 and 2019 - but looks like a lot of then available options are no longer available anymore. I've been looking at E30zone and NZ forums and the selection pretty much boils down to:
Here are what I was able to find to date:
Supersprint (plug and play but expensive)
Ebay (questionable quality, ill fitment due to incorrect stud)
Schmiedmann Same as ebay Chinese made, ill fitment
BTB headers (regarded as one of best in E30zone forum but it's no longer in production, there were some surplus / rerun from 2020 but they're all gone)
Team2Fast headers (they claim these are german manufactured high quality but I've never heard of them.
AAF (more expensive than Supersprint, potential clearance issue, will likely need custom downpipe solution by looking at the shape)
IE engineering shorty(RD copy) or longtube (lots of quality complaints in R3V but these are no longer available anyways. I reached out to them to confirm)
Motorsports Downunder Kinda looks like BTB, based in Austrailia, but I never heard of this company so no idea if this is legit or scam
Bavauto, Sebring, Magnex, Quicksilver, are reputable names I found but none of these options are available anymore, not even in classifieds, and I also heard some mentions of Alpina, Hartge, BTB copy repros on Ebay but it looks like all copies that are on Ebay is the same longtube design based on the shape).
I'd love to hear if there are other companies I'm missing - thanks!
Here are what I was able to find to date:
Supersprint (plug and play but expensive)
Ebay (questionable quality, ill fitment due to incorrect stud)
Schmiedmann Same as ebay Chinese made, ill fitment
BTB headers (regarded as one of best in E30zone forum but it's no longer in production, there were some surplus / rerun from 2020 but they're all gone)
Team2Fast headers (they claim these are german manufactured high quality but I've never heard of them.
AAF (more expensive than Supersprint, potential clearance issue, will likely need custom downpipe solution by looking at the shape)
IE engineering shorty(RD copy) or longtube (lots of quality complaints in R3V but these are no longer available anyways. I reached out to them to confirm)
Motorsports Downunder Kinda looks like BTB, based in Austrailia, but I never heard of this company so no idea if this is legit or scam
Bavauto, Sebring, Magnex, Quicksilver, are reputable names I found but none of these options are available anymore, not even in classifieds, and I also heard some mentions of Alpina, Hartge, BTB copy repros on Ebay but it looks like all copies that are on Ebay is the same longtube design based on the shape).
I'd love to hear if there are other companies I'm missing - thanks!
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