I am building my 350 and really just need to know what cam would help me produce aprox 300RWHP with 416 heads from my old 305. I have recently seen the light and am also going with the 454 tbi unit and machining my edelbrock tbi intake manifold. I'm also installing a good set of headman headers, willing to buy tq converter but not really wanting to.

Huge by large should do it, it's gonna be very difficult to make 300 at the wheels without getting a good set of heads. You can make 300 at the crank pretty easily with a cam in the 214 to 224 range.