1973 GMC K25/K2500 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 K25/K2500 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