off to rolling road this weekend!!!

hello all, finally getting my ol girl to the rolling road, same guy tuned my barracuda when it was a 318, now its a 440, running a four speed, 906 heads, proform 750 carb, edelbrock dual plane inlet,shumacker headers,no idea cam but guessing stock due to idle, the motor a low comp but 65 casting so have plans to wake her up in future, what sort of hp you reakon? im thinking touch over 300 at flywheel judging how it went with 318 and that made 240hp.