I don't know how hard they are to get. Maybe they are the same part number as the Redeye or Super Stock items, and may be readily available. Check the online Mopar parts places.
Also, if you are drag racing, anything you can do to help the car rotate entirely onto its rear tires will help you launch. This means decreasing weight ahead of the center of gravity and below it, and increasing weight behind the center of gravity and above it, if just dealing with weight.
If you could remove a few hundred pounds up front, and put them in the form of lead sheets securely glued to the underside of the roof over the rear seat, the weight would have the most dramatic effect (given the stock envelope) that it could in helping shift the car's weight onto the rear tires on launch.
I am not advocating this, just commenting on the physics.
Also, raising the rear end or front and rear will help with this, as it will increase the height of the center of gravity, which is free weight transfer with no added weight, just some more drag.
When a car wheelies, it rotates its mass about the center of mass (gravity) first, then when it has exhausted all travel available by compressing rear springs and extending front ones, it then starts to pivot the entire car about the contact patch of the rear tires on the pavement.
You don't want the rear end to squat, PER SE. You want the rotation of the car and weight being transferred to the rear tires, which is shown by the springs compressing in the rear. Lowering a drag car does nothing to assist it in weight transfer, though it may look cool. Top fuelers are so low because they have to tune things to FIGHT doing wheelies. It's one reason they subtracted some frame members in their traditional design, to allow the rear part of the car to rotate a bit, while the front end still droops and stays in contact with the pavement. They have so much power, they can wheelie at will. What they are aiming for is maximum weight transfer while still having some shred of steering contact with the track.
Pro Stockers can also wheelie regardless, so they tune the launch to just skim the asphalt with the front tires, which is an ideal launch, according to Bob Glidden, the winningest Pro Stock driver in history.
This is stuff you won't find in "textbooks," but it is physics, and it is undeniable. Gassers looked like this
View attachment 584331
and Altered cars had an altered wheelbase:
View attachment 584332
Notice rear wheels moved substantially forward from stock.
This was done to make the right triangle between the center of gravity and the rear contact patch and the ground to be as steep as possible, which made it easier to transfer weight to the rear tires, because, as one guy said from back then, the tires were skinny and terrible for traction, so they had to use all means available to put more weight on them.
Now, for road racing, you want quite the opposite. You want about 60 percent rear, 40 percent front weight distribution, STATIC. Then you want the cg as low as you can get it so all four tires get to maximize their traction, as very little weight shift occurs at any time.