For the 240, just go to the mcparts store and get a new set of calipers and change out all the brake hoses and flush out the fluid, its probably black anyway
The calipers are probably rusted you can sand the cylinders lightly once you fight them off and maybe get them to work again, but with all you have going on just replace them new in pairs, but I am sure you already knew that!.
My free opinion

I was told the same thing when mine did the same thing, but flushing the fliuds and changing the pads fixed my problem. Make sure you soak the bleeder screws a few days before attempting to use them or else they can and will break off.

WOW that finny is really nice..how did you find it? Can I suggest one thing???
New different color dashmat???
purdy purdy

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