Mid/late 70's Corvette with ramhorn style manifolds. If you want to run the wires properly under the engine and through the motor mounts this is what you need.
I picked up a MSD set online but I would think all the major players make similar sets.
This is the set I got but I didn't get them from them if I remember right.
http://www.partsamerica.com/productd...e=5004&PTSet=A They show to be for a 77 350 Corvette.