I have a 465 in my 82 JC8. The SM465 is a truck tranny so yes it drives and shifts just like a truck!!!! I'd hate to drive mine in the city!!!! It did make a lot of difference on the trails for the better. Remember the 465 is a thee speed with the compound gear making it a four and I dont'think you would use granny gear in the city much!!!
I would try to find a NV4500 if I could do it over again. I already had the 465 so thats the way I went!