170 /6, Whats it worth? And where can I get one?

I have an aluminum 225 /6 in my 1962 Dodge Lancer just dying to get rebuilt.
Due to some leakage from all the seals (from sitting YEARS), and some smoking.
But with it being so rare/odd, I wasn't able to find anyone to do it.

Not much special technique needed in rebuilding one of these. You need the unique head gasket and the unique rear main seal pieces, but beyond that, standard reconditioning techniques apply.