Below is the new KLB combo soft spring big bar car. This car can be changed from big spring to coil over in a matter of minutes
if the coil overs are not right for the track simply change to a big spring.
You don't even have to turn a screw.
This car comes with adjustable roll center, Ackerman, trailing arms anti-dive bolt on bumper bars seat rails motor mounts shock mounts.
Plate car price is only $4975.
Now Stocking 
Sway slapper pad and bump pad that won't fall off it has a mono ball and snap ring.