I absolutely get your drift ned. I was going through the Simpson desert last year in an 80 Series LandCruiser that had 3" suspension lift and only "2 inch lift" shocks, we were 'topping out' the shocks repeatedly and the over-extension was quite an issue... broke one shock, then the other. Really fun.
If I run Torana mounts, or convert to HQ rear shocks with the mount a bit higher (is that even necessary) how much can I really control the drop-out?
I want to run pipes under the diff and don't want them to hang down much. The car ain't going to be off-roading so it's really just about putting it on a hoist etc. I think