Query on used vehicle

vinod vinod (50 Points)

05 October 2019  
Dear experts

Business is purchase used vehicles from domestic individuals and resale it.
eg. purchase value- 1L
sale value. - 1.25L
margin value. - .25L
how to file this in Gst?
in this case Gst under goods or service section?
haveRCM?
is turnover .25L or 1.25L( taxable)
opt composition only or regular also?
reply plz