Check the neck length of that color CRT. AFAIK, none has turned up short enough to fit the Compact case. Also check Sync rates and Resolutions supported. The Radius card in question doesn't support 60Hz VGA input.
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https://68kmla.org/bb/viewtopic.php?f=29&t=16476IIsiColorPivotII_PDS_Card_HackProject™