Will Delco-Remy centrifugal advance springs work in a MP distributor?

That doesn’t fit the advance mechanism the OP has. I can get the part number for the correct one, but they are like hens teeth. There ain’t none out there.
I agree. I once and a while find them but not to often. Now the MP style light springs are easy to find. Think RRR nailed it with FBO springs.