Before...
Notice you can see the silver strip of metal on the firewall just above the air cleaner easily.
After...
Not so much. (Complimentary/copycat invisible man Rob Edwards photo)
Previously, the oil pan was about 3/4 of an inch below the cross member...now it's the opposite. Now, the engine crossmember has to come out to remove the air ducts. Granted, it may settle some after driving.
One thing I didn't mention before; while assembling, bolt up the heat shields along motor mounts prior to tighten up the motor mount bolts that run into the block. Start the motor mount bolts, leave them about a half inch loose, tighten both ends of the mounts on the crossmember and upper motor mount bracket (studs) and then lift the motor slightly. This allows more room for getting the two little heat shield bolts started. Then drop the engine down and tighten the eight (four each side) engine motor mount bolts.
Time for a celebratory cigar!
Thought about firing her up, but I'm still waiting on a alternator.
Brian.