New model complete headlight set if we see is in three piece Visor, Visor Shield & Headlight than comes mounting+ dashboard. Complete headlight would be around 2500-3000. Rear cowl i believe would not fit but there is possibility of installing new seat fitting complete new rear frame portion where seat is installed and this will require fitting of new rear fender & tail light as well.,
Umer instead of converting it in 2020 I would suggest keep the front alteast simple with same round headlight.