I purchased MCB brakes for my 69 Newport on Dennis' recommendation. I LOVE them. I dont drive the Newport much anymore, but when I did, the brakes we great. Excellent stopping power with no fade. Installation was straight forward. Just watch all of your fittings so they dont snap in place. DAMHIK.
The two kits I ordered (in 2016) were PLY 336 WC-C (brakes in a box) for the front and PLY 335 WC-C (brakes in a box) for the rear. $198 a piece plus shipping. This is everything but the drums. Get yer drums cut, put their pads on (make sure you bed them as per the instructions!) and go to town. While you are at it, you might as well change the 2 rubber hoses in front and the one over the axle out back.
Call em up. The guy I talked to (I do not remember his name, though I do not think it was John as it says on the invoice below) was very knowledgeable and I called multiple times before I purchased them and you can tell he cared and wanted to get it right.
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Side note: I am on C bodies also. Same handle as here.