Where can you find a torrent for the Cobra workprint?

Yes, there aren't many video stores in general left in Australia.
I believe the Aussie version is the same as the US DVD. Remember PAL also alters the running time.
There are torrents of the 2 hour work print out there online. It's ripped from a VHS source and is time coded. Perhaps some clever person with the time on their hands, could edit together a version using the DVD/TV Version and the Workprint to get the best version of Cobra?
"A Squid Eating Dough in a Polyethylene Bag Is Fast and Bulbous, Got Me?"

I live in Australia, and I noticed Cobra DVD in the ex-rentals section at Blockbuster the other day
Wow, you've still got blockbuster in Australia? I thought that place went bust? There were three blockbusters in my town and they've all closed down.
To answer your question - it's a probably just a type-o. No extended cut has ever nor will ever be released.
He was my C.O. in Nam. CIA listed him as MIA but the V.A. ID'd his M.O. and put out an APB.