I you ever get the chance to ride in a turboed 420a these kind of thoughts would never even cross your mind. After I rode in gregs 12.8 second monster I got the feel of what our engine is capable of. With just a stage 3 our little 4 cyl engines can out accelerate huge V8's such as WS6's and camaro SS's. There is some real potential trapped under our one humped hoods. Be proud of the 420a and dont ever think about swapping any other engine in its place.