I don't think that he would lie, just that he might not be qualified. The addition of the offset bushings resulted in less than 1 degree of caster? Really? My 70 Charger is a shade under 5 degrees with essentially the same parts. I understand production line variances but that seems excessive.
The owner drives the car sparingly since buying a Challenger R/T in 2012. He may not care a whole bunch. I'm just curious about this because I've had much better luck with other cars.