I was wondering about something, when I work my way up to my TF p-51 that has a barley used 100 series knight engine in it, well when I get the handle on her hopefully in the spring would I notice a difference between a knight 100 and knight 120? If so how much of a speed difference would I expect? Also does anyone know what the top speed of my p-51 will be with the 100 in her? Just asking so I kinda have an idea how close my sim is to what she will do in real life. Thank you all very much....