I use a Kimpex 04-269 on my 81 Invader (same rear skid as 81-82 LTD's). This is a gas shock and is, in my opinion, a noticeably better ride than with a hydraulic shock. I have used the same shock on my 79' Invader. So yes, the shock you posted will fit. There are also cheaper shocks that will fit, but if you can afford the extra few bucks, it's worth it.