DELPHI parts much cheaper on Ebay than RockAuto
Going to buy a new EGR valve and MAF for the 98 S10.
Best price for DELPHI EGR on RockAuto (before discount) 124.99 + shipping. Ebay, 74.95with free shipping.
Same with S10 fuel pump, over $50 less on Ebay. If you are not in a hurry, might be worth cross referencing part numbers from Rock to Ebay. A word of caution- be careful as some Ebay vendors are selling what you think are AC/DELCO or DELPHI and they word it to trick you but it ends up being a Chinese knock off.