I helped with an I6 250 16197427 TBI conversion, using donor parts from a 1994 full size pickup / 4.3 liter /4L60E. The I6 250 distributor was converted to an ACDELCO 88864755 ( https://www.carid.com/acdelco/profes...-88864755.html ) to simplify computer controlled timing. The conversion incorporated a new custom 16197427 harness unitizing the donors VSSB. The chip was custom programmed, without Knock Sensor or Emissions. Tuning incorporated using a WBO2 http://www.gearhead-efi.com/Fuel-Inj...g)-Spreadsheet The 4L60E shifting was tuned using Bluecat https://forum.hptuners.com/showthrea...Table-Software

dave w