I have a 91 convertible 5.0 and a few weeks ago it wouldn't turn over I knew it was low on gas so I thought I had blown the fuel pump so I changed that and still nothing. I have spark and have fuel coming up. A buddy of mine told me it might be the tfi module so I did that also and still nothing. Any ideas of what's going on?

 

wont turn over as in engine wont spin when trying to crank or engine wont crank up and run?