Sounds like you may want to decide just 'how much power' you need for whatever you have planned for the car.Would suggest you determine that first and get suggestions off this site from people like the first two,Erik and Denny(and some others that are experienced builders)then go searching for the parts.
'Flying' and 'max horsepower' mean different things to different people.Be specific about what you want it to do and you'll get alot of good info here.