sorry guys i have been working alot, here is the info vin ig4aj4743dh9i3937, number above the fly wheel 1261438 3, number on intake by egr valve 5512236
im located in chicago, i have a complete 4.1 buick engine for sale with 82,000 miles on it. it came out of my 1983 buick regal i swapped it out for a h.o. olds 307 out of a 442. the price on the engine is 450
yeah i haven't been here in a while just working hard and getting what i need for the buick, but please help me with the thread and when i swap from the 2.1 v6 to the 307 v8 will i have to change the ecm?