I will definitely go for new one. what is your opinion regarding slapping a 250cc air cooled motor, i am more concerned about cutting/modification of frame, does a 250 motor requires modification in frame too as DT has quite a small engine bay.
What types of new engines are currently available with you, OHC, OHV, with/without balancer etc and does a new engine comes with all electrics i.e CDI, coil and rectifier. Sorry for too many questions. Kindly PM me the prices of your recommended engines. I will be really thankful.