Me and some friends are building a street course car. And it has to be a carbed 305. So I started thinking, start with the 265LT1, build it to a 305, LT4 heads, LT4 carb intake, holley 670 street avenger, hooker shorties, true duals x-pipe, mufflers, k&n open element. Also I don't know if we are using the LT1 or LT4 valvetrain, so maybe I could get numbers for both Also switching to HEI with all MSD. Any guesses? I was thinking +-300hp? Thanks!