1000 hp means you need about $50,000 in your checkbook since that is what it will cost to build the engine and the car to handle it. So if you have $50,000 in the check book then get started spending it. I'm sure it is possible to build a 1000 hp Mopar SB but there might only be one or two of them that have ever existed so it isn't exactly something common. Gen 3 Hemi with supercharger or turbo should be able to hit the 1000 hp mark and stay together so that is probably a more likely target. But honestly, I think you're going to have a really tough time building what you say you want.