Yes I am new here , but as some of you may know, I will be installing a 2008 5.3 into my '72 Blazer. I will be picking up the motor this weekend. I am not sure if it was a flex fuel motor or not (how do I tell?)(dont have the VIN untill this weekend). My questions is, will this have any affect on my conversion? Anything special might need to be done? Not sure yet wether or not any of this applies, but worse case scenario, what do I need if anything?