Best n/a 2.5L build possible?
Just joined this. Im looking for the best possible n/a 2.5L build for a race engine. Cant decide if i should go with the m50/tu or m52/tu. Looking for a sustainable high revving engine (anywhere above 7k is good though). Any advice is extremely welcome. Im hoping to put it in a completely custom built frame for a track toy. Thanks again.