regards type of twin,it will come under 50cc stock but upgrades are the stuff of life so individuals can enhance to there own comfort levels. a v twin was my intention but I am starting with an inline twin that has the feel of the old inline fours that indian used on there earlier models as well as some henderson cycles, I build and design robotic shows mhere in vegas so it allows me the equipment to be creative with product development going with a four stroke for sound as well as torque,like the two strokes they just have a shorter future in todays decible driven world...P.S. the front flesh is very nice as well