[Aussie Mike]

Hi Adam,

I believe the BTR rear end in the Falcon is a different animal from the Commadore IRS. When you say Hydratrack I assume you mean LSD? From my enquiries on the Ford BTR rear end it seems that most of the IRS diffs are LSD as well as most people who order the IRS order the LSD as well. I got my BTR Ford unit from a wrecker and I couldn't tell if it was a LSD or not as they only lock under power.

Unfortunately the Ford IRS rear ends aren't as common at the wreckers as the Commadore unit. It took a bit of ringing around before I found one.

Cheers