So after further research, it appears this idea is far from bolting in a new dash. Looks like the upper structure of the dash and the support for the steering column is actually all welded into the car.
View attachment 1715588255
Short of starting with a complete parts car and extensively reworking the dash area, this doesn't look do-able.
Might be easier to buy a Volare and swap in the front suspension from a Duster than to swap the dashes.
Ah well, it was fun to daydream about.
