Thinking of buying a p5 or b5 from you guys. How much improvement is gained by the full mod versions. Obviously there is more power but what else is gained. This will be my first nitro car since 2007... Last motor I ran was a stock vspec. I'm going to be running a 8ight 3.0. I also have a os2050 pipe in mint shape will it perform with any of these motors??

Thanks
Glenn