Cross-Country Road Trip in a '68 Barracuda

I've done this with a packed car.
You are hauling an 833 AND and cast intake?
And front disc brakes and suspension parts, new calipers?
That's a lot of weight just that.
And TWO bellhousings?
Is this an original 8 3/4 to your car or have you made it wider with the aftermarket axle with the wider back spacing?
I had less weight than you and my M body 8 1/4 Duster with 215 70R15 scraped the sides on the big bumps.
With a fold down rear seat.
I was by my self.
I've fixed the rubbing by adding a leaf to the springs since then.
So, I say your rear is not going to be happy regardless.
And your car is going to be squirrelly.
I would not recommend Air Shocks over better springs anyway.
Or get a small trailer for tool boxes and heavy stuff like I did.
Weld up a bumper hitch.
A piece of plywood and straps.
That way you can carry some spare gas cans on it too through Wyoming.
If your car is an automatic either have a new starter or carry a spare for the parking lot.
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