I run one in my 74 Challenger also. 440 with RPM manifold,750 tweaked Holley and stock HP manifolds. Its very street friendly,has a nice lope and decent power. My car only runs 14.50's but I think the manifolds and H pipe are the culprits.

416 stroker from Nick at Compu-flow. 11.14 in full street trim. Seems like a new best every time out.
11.06 open headers----so far!!