Question about non OD 833 and rpm range

Thanks for all the replies guys much appreciated.
So I checked the diff ratio and it is in fact 3.45:1.
Tyres are 245/60/15 making them a 26.6 inch tyre. So perhaps I can swap out the rear gears for 3.23 which would help with the freeway driving or I can just live with it.
Driving long distance at 3000 rpm shouldn't hurt the engine should it?
We have a huge mopar show here every year and it's about a 4 hr drive away.
I will be putting 28 inch tyres on it soon which should also help.20220326_094634.jpg Screenshot_20220326-101048_DuckDuckGo.jpg