Durango hemi vs car hemi timing cover?

Wondering the difference in the timing cover. I have and eagle out of 14 durango. Swap is well under way. So far exhaust headers, a518 trans, rebuilt front end. Everything had been a bit of a challenge, but not impossible. I now need to figure out the alternator. Looks like there's room, but I'm not sure how far off the covers are from the cars. And what alternator to buy. We're really want this running and driving before the hot rod power tour, but may not be possible. Pipe dream right lol? Thanks for your help