I have noticed that the gap between the hood and front end lets all sorts of dirt and other assorted mess into the engine compartment. its a big gap.

Is there supposed to be something there to block the dirt and water"

Any way around this like some sort of weather stripping.

Havent washed my engine bay in 1 year had the car for a year and the damn thing is very clean actually..........maybe there is a gasket or something missing.

My gap doesn't seem that big, is your hood adjusted correctly. Mind you, I have an 04 maybe something changed between the two years.

i have a 04 as well. clean as a whistle or something like htat.

Yea I have a 2004 Comp G and I have noticed only driving 300 miles since I got the car from being brand new that it was filthy also.

I have a 2004 GTP and the front of my car gets very dirty. Mine is pearl white. Maybe that color showes better.