convert to newer gm fuel injection

about 2-3 yrs ago, someone listed the part no's for updating the fuel injection on 2001 jimmy 4.3 l w code engine. could someone help me out with a list, pn,s etc. i can do the wreching, just can't find the parts and procedures.
thanks

The injector assembly is AC Delco 217-3028 or Delphi FJ-10565. Amazon & Ebay have some really good prices. Now would be the time to upgrade your lower intake manifold gasket as well, only a few more bolts to remove the manifold. Felpro #MS98002T is the redesigned upgrade gasket, don't waste your time or money on anything else ;)