The bolt dimensions are the same.
Not sure why you would want to, the Dartmouth is a Traditional looking toilet and the Drake is a Standard looking toilet.
You would be mixing looks.
They are both G-max flush.
I like the price of the Drake and the style of the Dartmouth. I also like the rimed flat top of the Dartmouth as it seems better for storage/display use.
Robbie
I recently installed a Dartmouth. It works great. I can't give a personal comparison to the Drake, but the Dartmouth was not all that much more than the Drake. You should realize the Dartmouth come in ADA height only.