Distributor Over-Advancing

No problem haha i'm just looking for suggestions on how to add a little bit of power to this engine, as its a bit of a dog as it is now.

Its a 1998 5.2 with an Airgap Manifold and 750 Annular booster carburetor (I had a 600 holley and did find an improvement in power with the bigger carb), factory 1998 Magnum exhaust manifolds with dual 2.25 exhaust through glasspacks, factory high stall, and 3.23 gears