QUESTION I HAVE A FRIEND THAT WORKS AT THE GM DEALER AND SAID HE COULD HOOK ME UP WITH SOME VORTEC HEAD NOW MY QUESTION IS CAN I JUST TAKE MY OLD HEADS OFF AND USE THE VORTECS OR DO I HAVE TO DECK THE BLOCK AND USE A DIFF INTAKE I HAVE A NEW GM CRATE MOTOR 4BOLT MAIN THAT I BOUGHT IN 95 BUT DIDNT COME WITH THE VORTEC HEADS SO ANY ONE THAT KNOWS ABOUT THIS ANSWER ME BACK THANX AND CHECK US OUT AT JIMJIM.COLORADOK5.COM