We should also consider there may be an option (wire/fuse that could be switched/disabled...to defeat ABS) if it's really detrimental when off-roading.

FWIW... In the early 2000's, my master brake cylinder was failing on my 89 Corvette. A new (factory) part was the only option @ $600. I thought that was rediculous pricing (as with many factory items)....so I bought a salvage part for around $100. It's still working properly over 15 years later. On our ABS modules, there does seem to be an abnormally high number of failure reports...which would lead me to the $99 rebuild option. How do we know any NOS part wouldn't have the same defect? (That's rhetorical...just something to consider.)