10.5:1 Pistons for '66 273 Block w/ '67 920 Heads

I'm sorry for not being able to separate the stuff I read in these threads. I haven't run across my exact build and I don't know enough to determinewhich other applications are relevant. 318 v.273 v. 302 heads v. 320 heads v. etc. This is my first MOPAR and the learning curve is a little steep for this old brain, hence the remedial questions.

I've checked Egge and couldn't quite put their products list together. I know the more I read, and there's a boatload of it, the better questions I'll be able to ask.
Thanks for your patience.