what about a 413

I've got my eye on a '64 Chrysler New Yorker with a 413 in it. I assume it will have the 6 bolt flywheel/flexplate bolt hole pattern on the crank.

Anything else I should pull from this car since it's all there?
8 3/4. Early C-body rear ends like that are the PERFECT canidate to be narrowed down as they also have non tapered axles that can be shortened and resplined. Also, IIRC, big drums.