I have done some research and found out from GM that my 91 Astro donor 4.3 v6 did not have vat (vehicle anti theft) installed, so I think I'm good to go, they said it should start ok. The earlier TBI engines didn't have them. I'm not sure what sensors I will not reconnect. I think I need all of them.
Only time will tell. Once the install is done I'll know more. Always open to comments of people who have experience doing this.
