Engine enigma/problem (stalled on highway, won't start, codes p0300 & p0327)

[deligo]

Well, I got the upper timing belt cover removed and the timing belt looks to be in surprisingly good condition but the bad news is there are chunks of plastic timing gear idler pulley sprinkled in the compartment. bummer.

looking down in to the timing belt compartment from the top


A view of the broken pulley, there should be a plastic part between the belt and the pulley


This is the bottom of the engine between the crank shaft pulley and the oil pan. What is up with the large crack?

The timing belt does not show any chew marks or scraping so I might be really stinking lucky, I will post more as I delve deeper in to the dark recesses of my aveo. wish me luck.