Yup, that was me looking for the headers. I've seen those ones for sale before, but they aren't actually that great a price. RD discontinued those headers and sold them all off at 200usd. Unfortunaltely I missed out, and a lot of people bought multiple sets and are now trying to sell them at a profit.
I was hoping to find something used for around that much canadian.
For anyone else with an E30, RD is selling off their resonators (to replace the cat) for 55 usd, marked down from 450! I just ordered one.