Yes.
5 1/4 i belive
No.
They should as there built on the same platform.
1999 300m
5w30
10W3010W30
It has a belt.
You can find a wiring diagram for a 1999 Chrysler 300m in the vehicle's owner's manual. You can also find it at various auto parts stores.
Access the battery on the '99 300M through the passenger side front wheel well. Turn the steering wheel all the way to the right, remove the cover, remove the air filter and then you can access the battery.
Aluminum..
3,567 lbs. curb weight