how can I tell the difference lt1 or ls1???

I am looking at buying a new camaro and I would like to know how I can tell from popping the hood if it is a lt1 or ls1?

LT1 camaro
 
 
 

LS1 Camaro
 
 
 
also, the LS1 has a plastic intake that looks like so
also, on the ls1 the alternator is on the bottom side of the motor.
 
 
the lt1 has a metal intake manifold like so
also notice here how the alternator is off the the left of the motor up top.

Yeah +1 the headlights are a dead-give away outside, under the hood the intake manifold....

 specter, good job

theres been many post about that on here...