what ever happened to the aussie wideband
 

did any biuld it I want order it but still trying to find a cheep micro soldering setup.

Here's the link to a current thread discussing the DIY wideband:

https://www.rx7club.com/forum/showth...threadid=47104

Dude, I'm building it with a cheap-o $10 Radio Shack pencil iron... It's a bit tight, be very doable.