Stop in for a cup of coffee

So, with my rat rod, I am destroying outer wheel bearings. Maybe 500 miles on last set. 37 Ford spindles and F150 hubs using a kit from Speedway. Overkill for a 2000lb car. Car steers and handles awesome. Could it be toe in or out?
Straight axle? 37-48 ford? If so, I’m guessing either your Ackerman or your KPI is off, of those two, I’d guess the KPI as that would be more likely to wear wheel bearings