i want to buy second hand bike i am preferring for p180
i want to buy second hand bike.i am preferring for p180 with roundheadlamps n do some modifications.silencer,seat,handle bar,gear lever,rear tyre will be replaced with that of p200 digital.should i go for the bike with modifications?what mileage should i expect?other options available are p150/180 2006 analogue and apache 2006 analogue.please suggest.