T-6? No, I'm old. IP in tandem a/c: F-4, F-104. IP in side by side a/c: T-37, B-727, DC-9, MD-80, ERJ-170. IP in separate a/c: A-10.
Neat fact. The prototype B-52 had a tandem seating set-up, like the B-47. Curtis Lemay thought differently and told Boeing to redo the cockpit to a side by side arrangement.