The RAS is ideal for the rear. They do a great job of lifting the rear, reduceing sway and they also act as traction bars.
I had one problem with the set I ran, I didn't want any lift in the rear.
They are for sale.
Not wanting a stiff spring up front limits you to spacers as mentioned or... maybe a set of TRD progressive rate coils
tuned for a 4WD V8 would do the trick.
NOTE: The RAS did such a good job acting as an anti-sway bar I never installed my Hellwig. I sold it.
Now that I'm running Timbrens I had to order a brand new Hellwig.
The combination of the RAS
and a Hellwig may be a little to tight.