Re: Firestone Airbag Lift Spacers

^They could vary we’ll be and likely are stock type replacements. 
some Super duty’s of that era had a heavy front spring package. Call it a snowplow package or whatever. Came from the factory “leveled”. And rode like a lumber wagon. Had a  bunch of early superdoodys in the fleet with this package.  Looked like a 2” front port basically.