First of all, don't go looking for Les Richmond in Bayswater, as they are in Thomastown. :o
I gues it all comes down to one question, do you want big flex for show or to get you further up a track?
If for show, then allow springs to dislocate and remove your shocks altogether.:twisted:
If you want to get further up a track then this is what I would do:
1. Lengthen your shock mounts (Les Richmond have a good kit for this) because it is pointless putting in longer springs if the shocks are what is limiting the downtravel, but you cant put in longer shocks without modifying the shock mounts
2. Use nice long soft springs. If it's just a weekend tuff truck then soft springs are fine. If you also carry loads then use helper airbags in the rear.
Softer spring will be longer while still giving you the same lift and so will drop further.
3. Retain the springs
4. (more important than any of the above) Install lockers!;)

