Engine Temp LA 360

Most likely your Radiator. Is it large enough and flowing properly? Do you have a Fan Shroud, and a good fan? 160 is too cool- I would run a 180. Factory Thermostat is 195 in most cases
Yeah I had one of the 59 Magnums in an 02 Ram 4-door with Factory tow package was an 85,000 truck I was 2nd owner... the wheel bearing from Advance Auto into that the entire Hub split in half and took part of the steering with the rim tire brakes and everything else! They were so quick to give me my money back I'm thinking I should have sued the sons of bitches for their Chinese junk! Anyhow in Tampa Florida in the summer with that 195 (which is recommended as you say) the damn thing run way too hot I dropped the 180 in there brother she did much better! That's my story and I'm sticking to it!