Solitaire
RCC Addict
The Kings look a little long for that chassis, but I'm only going by the pic. Even the SCX10 stockers are long for the rear. I had to internally limit mine to keep the ride height decent.
If they aren't too long, you may be able to salvage them with as light a spring you can get that will fit.
If they aren't too long, you may be able to salvage them with as light a spring you can get that will fit.