Hi Guys,was just on Rock Auto looking at the injector upgrade kits for early Blazers.Noticed the Delphi kit was nearly 125 bucks more than the Delco version.I thought Delphi made the parts for GM.Is the Delphi kit better?

 

Delphi is the OE part manufacturer AC Delco is a GM approved aftermarket parts supplier. The OE suppliers always charge a premium. I prefer Delphi for fuel pumps personally even if they aren't the OE supplier.