Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
Where are you located? I have a bloke I use. There are only a couple of decent diff builders left in Adelaide now. A lot of the old guys have retired.
Cheers mate will have a look at them, that’s seems like a fair price alsoTry to use genuine Spicer gears. I found a guy that does good used gears for $300 he had 3.5-4.1 in stock . $6-700 for new genuine.
The wave loc LSD units I've heard some good things about. I'm contemplating going one over a reworked factory one.