KAX Showcase : Kerben Krakenburg Type F :: 4
You will need additional Air Intakes (simulating turbo pumps or blowers), and you need some heat sinkers to get rid of the horrendous internal heat this engine produce - exactly as the real life counterparts, by the way. For now, Basic Fins are excellent passive heat sinkers, you will be able to get that juice for more time using them on the Engine - depending of your airspeed and altitude, of course. ;)
But it will not be enough, you will need to compromise!