63 Riviera suspension compatibilities

[Chaz]

Hi,

I'd like to upgrade the control arms on my 63 Riv with tubular control arms and also go with an air ride suspension. Unfortunately I can't locate anyone that sells aftermarket control arms that fit the Riv.

Anyhow I noticed the Impala [Red Sled] on Musclecar TV also has a cruciform frame and it's sporting tubular Strong Arms with air ride... my question: Are there any parts on first Gen Rivs that are shared parts with other GM models? I know all of the body panels are unique in the GM family but I was hoping that if there were compatible parts underneath the body I could order those parts using another model rather than my Riv.

Thanks,

Chaz