Those springs are very soft, which is why they ride and flex well. That's why I used a 4-leaf version on my truck and older 4runner.

So I guess what you're asking is how to get more up-travel (compression travel) from normal ride height?

I would say either add more lift or shorten your bump stops.

'97 4Runner, '06 F350, '86 4Runner, '05 WR450
http://home.4x4wire.com/erik