Having driven an International Harvester M55 (with Continental 6602 Gasoline engine) on more occasions than I'd care to, they do sound like a heard of aircraft when driving through built up areas. I also noted that the exhaust is just at the right height for smoking out posers in soft top BMWs at traffic lights.... as for brakes and turning circle, the less said the better! Although specified for carrying Honest John resupply loads, our one never had the Honest John mounting frames installed. The firepower museum also had one that was fitted with the tie downs.