Its a little late now for you, but before I pulled mine out I took lots of measurements of where the old engine and trans set. I then figured out how much longer the new one was then the old.I was 1 in longer then the old. I also already had my radiator and had it mounted on the grill assembly. But this is what I would do if you don't have rad. I would put your trans on your engine and set it in with the trans. Mount and/or skid plate where they belong, and see how things look underneath. Then find your engine height, with your cherrypicker. Set it where it looks good. Build cribbing underneath t oil pan and set it down slowly. Disconnect your cherry picker and see if the hood closes. If everything looks good tack the engine mounts and carefully remove the engine and trans. Then burn em in solid.
Here, hold my beer and watch this SxxT