1973 GMC C25/C2500 Suburban equipped with 7.4L V8 Gas OHV, 5.7L V8 LPG OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 LPG OHV, 4.1L L6 Gas OHV
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with Harrison A-6 A/C Compressor
1973 GMC C25/C2500 Suburban equipped with 7.4L V8 Gas OHV, 5.7L V8 LPG OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 LPG OHV, 4.1L L6 Gas OHV
with Harrison A-6 A/C Compressor