Default holley sniper 4500

Any one try a Holley sniper 4500 on a car with less then 800 hp yet? I have a 458w that makes 740 & 7000rpm hp on pump gas. Then add 300 shot to it. Holley really cant give me answer why it has the 800 hp cut off.I could use a carb but wanted better street ability for cruising. So has any one had any luck. They were trying to talk me in to the 4150 super sniper. no way 800cfm throttle body is going to cut it.