1952-59 Ford what's the difference?

i just bought a '54 ford mainline sedan, i guess, as it doesn't have papers and was curious as to what body it is. i haven't got it home so no pics yet. it has the small 1/4 window though. from what i have came across, that would make it a business coupe at least, right? what is the difference between a mainline and a customline? when i was 16 i had a '53 mainline, but that was 52 years ago and don't remember much about the details anymore. thanks for any help.
ps. i don't care about the papers as this will be a drag car only.

 

The Mainline is the less expensive model & has less chrome then the Customline.
No Chrome around windshield or back window. Less Chrome along the sides.
That kind of thing. Enjoy your new Ride!

 

Please post some pics when it arrives. Seems like a really nice project is beginning soon.