83 Concord problems: A little rust and rear wheel cylinders

["justjeff53" <justjeff53@xxxx>]

Houdy folks.
I was going over the Concord and found some serious rust 
beneath the vinyl roof under the "opera" windows. I knew it was a 
problem but had no idea it was rusted this bad. The rest on the body 
is in nice shape. I know a fellow that restores old cars.(you should 
see his 55 T bird) He told me I should get rid of the vinyl top. I 
kinda hate to do this but... Did the Vinyl top come standard on the 
Concord DL? 
Also. I would like to replace the rear wheel cylinders. 
The guy at the parts store in Loudonville wanted $50 each for them. 
He told me parts for <oddball> cars were expensive. Cheapest ones I 
could find were around $35 at Advance auto parts. Anyone know where I 
can 
find these parts for less money? If it had been a station wagon, I 
could get em for $10. I don't want to sound cheap. But I just 
financed a House. The garage alone was worth it. (A new home for 
unwanted AMCs) And money is gonna be tight for the next few 
months. It's a great running car and I plan on keeping it for a long 
time. By The Way. Anyone know the production figures for the 78 to 83 
Concords? All my best

Jeff. Perrysville, Ohio