Tyler rebuilt an 80 series Landcruiser with a Ford engine transplant, 500hp. $150000 overall cost, but he admitted if he wasn't a youtuber with a very good mechanic (Burto, what a legend!) it wouldn't have happened. He's a very likeable, capable and smart guy. Ex teacher, now "living his best life" as people are prone to say these days .I've watched a few of Tyler's videos, not bad!
It appears (at first) that those Patrols are super capable.
Looking in a bit more detail, my guess is that you could almost buy a new Grenadier with the cost of the (sponsored) upgrades.