Steer clear of any product from New Era. They have had problems with anything and the law too. the OS engine will be more than enough power, but it depends on what r/c the hobby shop guy is going to be driving. Make sure you have a good tuned pipe setup, because the OS .18 breathes like crazy!

But, on second thought: http://www.neweramodels.com/cgi-bin/...=&part_id=1816 Could bring a whole new option to you... any big block you can think of. (this is the ONLY new era part i'd get)

Engine: http://www2.towerhobbies.com/cgi-bin...?&I=LXLSU7&P=7

now u need exhaust setup! I believe you need a clutch too. While you are at it, get the factory upgrade from CEN racing. http://cenracing.com/cars/ff/factoryupgrade.html that includes the new era conversion kit. Let us know if and when you smoke the owner.