Just wonderin'...

I've done 5 engine installs in classic Mopars so far (peanuts compared to others here), first was from the top all the rest were from the bottom except putting the latest engine in my Duster because I didn't want to remove the trans (which also involves removing the exhaust since my car has an X-pipe) or take the front suspension apart. If the car is already apart like @moper said it's definitely the way to go. Using the longest engine hoist you can get helps a lot too the legs get in the way when you're trying to position the k-member.