Google "$1.98 posi"--there are several references, but I couldn't find a link or posting of the article.

I don't trust stuff like that. If it was that cheap, reliable, safe, effective, that's the way limited slips would be built.

Call me silly.....

 

The question is What is inexpensive. Check out ebay and you can find stuff in various price ranges from a couple hundred bucks to several thousand. I went through the same search you are going through. Ended up buying a third member through ebay for about $325,

 

That sucks. :/

My "Traction Loc"(!) still turned both tires the same direction and still
worked pretty dangged good at ~200,000. No kidding. Only thing really
wrong was the pinion's pilot bearing surface was Brinelled pretty bad.

I had a little trouble with the carrier bearing preload tho. :/
Nothing a quick check by a professional wouldn't have fixed. :)
I followed Ford's Shop Manual's directions very carefully too, made myself a
fixture and everything.

Since then I found this gem... ! :)

Carrier preload...
YouTube - not enough carrier preload
YouTube - too much carrier preload
YouTube - carrier preload

Pinion preload...
YouTube - pinion preload

But first... this is simple as falling off a log...
YouTube - Making backlash adjustment on the Ford 9" rear.

http://www.panix.com/~alvinj/file12/Fcoast018.jpg
http://www.panix.com/~alvinj/file12/Fdrive018.jpg
http://www.panix.com/~alvinj/file12/Fpinion018.jpg

Made a tool from a "normalized" old file...
http://www.panix.com/~alvinj/file12/Ford9inch.jpg
http://www.panix.com/~alvinj/file12/Ford9inch-S.jpg (side)
http://www.panix.com/~alvinj/file12/Ford9inch-B.jpg (back side)
The holes were threaded, 5/16" grade 5 bolts screwed down tight to the end
of their threads and a jam nut added, then they were cut off. The tool is too
short, so needs a cheater pipe when you get down to the point he's at in the
video. :)

First thing!
...using a center punch mark the crap out of everything. :)

If this stupid ugly old Gringo can do it...

Alvin in AZ
PS- "it's easy when you know how" :)
PPS- This wasn't posted for Couger190 :/
PPPS- Couger190 can kiss my butt :)

 

just because of this thread this morning when I was in a hurry to go apply for a job I tried a burnout on some gravel where our gravel road meets the paved road. now I let out the clutch and I know the left tire was spinning but I'm not sure about the right one. when I came home I forgot to stop and look if the tires grabbed on both sides. it kinda felt like both of them were spinning but I'm not sure.

 

I put a Lock Right in my Jeep. It was around $300. It was a easy install, it replaces the spider gears. You do not have to set up the whole rear end