I just bought the piston/sleeve set to give my old NovaMega EVO5 a 2nd life. The set is about 80 euro, with a conrod I payed 115 euro, its a nice price to give it a try.
I did modify the exhaust port of the sleeve to the same timing as the EVO while the intakes have the same timing as the EVO. Did enter some fancy (JP style) grooving and when the winter is over I will give it a try to see if I did create a nice training/backup engine.
Speed is only fiction but a 130+km/h MRS4 is for real.