The stock 3.8 v6 in my FBird was 200 @the crank. Since I intend to keep the car till I croak I’ll rebuild the engine. With a cam, heads and exhaust It’ll hit 300 @ the crank pretty easily. Not bad for a six. The factory V8 was 300 @ the crank IFIRC. Not taking any bets on how long the trans will last after the upgrade...
Always the problem with horsepower mods. Tranny and brakes have to follow to make it not-so-tense.