Then quit messing with it. It's likely not timing related. All your pictures look good. Don't worry about the crank pulley marks, they are irrelevant at this time.

Are you making sure that things like the MAF connector are back in and secure? I think it can go in upside down, or if it's not fully seated the engine won't start.

Is there a crank sensor? If that were disconnected you won't have spark or fuel injector pulse.

BTW, I check for injector pulse using a pair of cheap LEDs. I plug both into the injector harness pointing opposite directions and crank the engine. Simple and extremely cheap.

For the spark, I guess you could have an assistant hold the dizzy end of the coil wire while you crank it <img src="/forums/images/graemlins/lol.gif" alt="" />

My bet is on the MAF connection though.