I installed a vintage air R134 unit in my non-AC truck about 5 yrs ago, used the original non-AC control panel and have not had a problem with it... I believe they have made improvements to the Sure Fit series kits since I bought mine, but don't know what was changed...I went with different side vents but used the original center vent.
I usually only need to have my fan on low speed to keep the cab cool here in SoCal...
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'72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA
72 Stepside Project
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