@ Vickytulla, hope u r doing good...
keeping in view your experience and experimentation with road master and on the other side your traveling experience to north side (i am a silent follower) reference of your tours is for reason that i want to travel northern areas on my road master.
Brother i have a road master, have restored it, is in good running condition but i am personally not satisfied with it. to cut the story short, i want to put some good decent engine in it in 250cc category with no or minimum alterations.
Your worthy input is required on;
1) Engine model?
2) Availability? (where would i find a good engine)
3) guideline for the installation of engine and alterations where required?