I have a set of 91 heads off my boat. 4.3 casting number.10105867. I'm just trying to get my boat running for the rest of.the summer. My buddy has a 2001 blazer that ran awesome. I want to know if I can just use that block and my heads and intake???? Its a 2 barrel. The motor i pulled out of boat was a roller motor. I have been a square body man all my life and never messed with v6.. I was told I could use that block with my intake and carb, I would just have to get an electric fuel pump, because the 2001 doesnt have a spot for the fuel pump. Any help would be very much appreciated. My buddy will give me.the motor if it will work.. I just dont want to waste my time to pull the motor and find.out it wont work..