hi all! I'm sure somewhere in the vastness of this forum this has been covered, but I'm going to ask anyway. (been searching for 2 days to find the answer) I have a 96 blazer with 190k on it. recently ( last 5 mos.) it has been reading low oil pressure when warm. I have changed the oil to 20w50 and installed a Purolator filter. this did not help. the real question is -- I have access to a 50k 1995 code "W" engine w/ balance shaft, can I swap it into my 96? if so what will I need to change over other then the front accessory drive and intake /exhaust manifolds? do I need to swap the heads? is there a difference in the intake manifold bolt holes? I have looked several places on the web and got several different answers. any thoughts or information would be very welcome and needed. the donor engine is for sale and may not be around for long. thank you in advance for the help.