Matt, I'm probably late on your question but I will comment or give my opinion. I have ran into the same "number" problem as you only to find out that they are not the same. Usually the reason is the front wheel cylinders cups are a fraction bigger than the back ones. I've also found difference from brand to brand over the years. I'm not saying its your problems but just my experiences.
Delco vs Raybestos? Both have had a good reputation over the years but I have no up to date info to share here except I would not be afraid to use either one of those. Others may have difference opinions.
However, I would advise to check the cylinders you have to see what size cups you have and then be specific when ordering as to what your getting. Its the only way to be POSITIVE....and there is always the possibility some previous owner did some "voodoo" on it. Check, double check when it comes to Brakes!

....and the prices are all over the board. Shop around. My personal experience on stuff I've ordered, in the past from LMC, is that they are pricey. Do the research, be informed and with a little luck you should be OK...along with the advice of others here who have more experience than me!!

Good luck, return and report your findings. Knowledge is the Best Resource.

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