I just went out and measured this one for you.
TSP-JM7613BK Mopar SB Pro Series Pro-Billet Electronic Distributor. Black Cap
The center terminal is slightly taller than the outers. From the base pad where it would sit in the block, to the peak of that center terminal is 7.75 inches. Call it 8 if you want to make sure you've got enough room to run a 90 degree coil wire. I posted boot kits somewhere above if needed.