Outer Limits 4x4 Board

I've picked up my first fourby...It's a Hilux, so how can I tell if I have a heavy duty pack in the rear or a normal one ?

And IF I have a HD pack in there, what can I do to make it...flexy...or do I need to get some new ones ?

B

You could take out the load leaves from the rear springs, which are usually the shortest thickest ones, that might help, but if you have standard shocks, your flex will be limited because of them.
Try a search as Im sure theres heaps of info about custom leaf packs on here.
I know that LUX89 has alot of info in his build thread about custom leaf packs, theres got to be heaps more info here.