Sorry Tom cannot help,
but since my '82 has a Ross Steering Box, I would bet that an Aftermarket Wheel for the Ross Column may fit your '90. Just an idea.
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Steve & Tricia
1982 Newell 38' Classic
DD 6V92
Hi Tom,
I THINK they are GM truck. I've also been told that there is a standard for wheel diameter on vehicles that require the 22.5 or 24.5 tires. In other words if you find a wheel that fits make sure it meets the DOT diameter standard. The bigger-the-better if you blow a front tire.
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1993 Newell 45'#316, 1976 Trans Am 455, 1967 GTO, 1953 Chevrolet 3105 (panel truck),1952 Chevrolet 3600,1969 Airstream Overlander. Always fixing something!