To unfasten the fuel line, you can go to autozone, etc and get smal round plastic fuel line tool. These plastic removers, slide over the fuel line and your rotate and push up against the fitting. When you do this, it moves an innser spring allowing the fitting to pull apart. You have to work with it a little bit but it will eventually come apart. Be sure to release the fuel pressure so as not to splatter fuel in your face, etc....
If you are trying to pull a v6 with engine and atx together, I would check antiknock clip on backside of engine...some have it some do not. unfasten alternator wiring
Where is it getting caught at, front back, side, etc???? I know you are probably tired and worn out

from the work and just want to get it over with!
Bob