Differences between 1972 and 1982 FJ40s?

Hello. I’m new to the Land Cruiser world and really I’m just looking into it now. I was just wondering what sort of major differences there were between these years. Overall looks seem to be pretty similar so I’m more looking for information on things like trouble spots, interiors, common issues that either were fixed or developed between years, and if one’s just more fun than the other.