75 Dart combo valve

Hey gang,

I picked up a disc brake combo valve from a 75 Dart off ebay and get it all cleaned up. It's the last piece I needed for my disc swap. I was also eyeing the valve from MP brakes. My question is that the 75 valve looks nothing like the block on my 69 or the combo valve offered from MP (looks almost like whats already on my car). Is this the correct valve I need for my 69?