Trying to save a ‘66 Barracuda

No engine or trans yet, but locating a 225 and a 904 doesn’t seem like it will present much of a problem; doesn’t seem to be any shortage of them on facebook marketplace, craigslist, etc. So driveshafts were all the same length no matter the year - from ‘66-‘75ish? No matter the wheelbase?
Only the short wheelbase I said. The 67 up only moved the front wheels forward.