Tractor Repair: type of alternator, alternator repair, international numbers

Question
replacing 6 volt with 12 volt how do i doit what alternator do i need tracktors a 300 international numbers i found on it are 17963  360553r3   360486r3  and 11 29 a

Answer
i would take the alternator to a alternator repair (most electric motor repair shops)
shop and they should be able to give you one that fits straight on and with the same pulley
if you are not using a hole lot of electricty a 60 amp alterntor should be plenty big enough