going to need to cut the stock hood. 4v heads will fit on it but then the blower wont. If serious best bet would be to build a aviator motor and do a turbo or centri blower. Motor will fit with a 2.5-3" cowl. I know someone who did a forged L motor in a calif crown vic. Car put down a little over 600 to the tire and moved out in the 1/4